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PYSEC-2018-52
Vulnerability from pysec - Published: 2018-07-30 16:29 - Updated: 2021-07-15 02:22A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
| Name | purl | cryptography | pkg:pypi/cryptography |
|---|
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "cryptography",
"purl": "pkg:pypi/cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "1.9"
},
{
"fixed": "2.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.9",
"2.0",
"2.0.1",
"2.0.2",
"2.0.3",
"2.1",
"2.1.1",
"2.1.2",
"2.1.3",
"2.1.4",
"2.2",
"2.2.1",
"2.2.2"
]
}
],
"aliases": [
"CVE-2018-10903",
"GHSA-fcf9-3qw3-gxmj"
],
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "PYSEC-2018-52",
"modified": "2021-07-15T02:22:07.445715Z",
"published": "2018-07-30T16:29:00Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3720-1/"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-fcf9-3qw3-gxmj"
}
]
}
brew-ansible@10-cve-2018-10903
Vulnerability from osv_homebrew
A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "cryptography",
"resource_purl": "pkg:pypi/cryptography@46.0.3",
"upstream_fixed_in": "2.3"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@10",
"purl": "pkg:brew/ansible%4010"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.7.0_6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@46.0.3",
"name": "cryptography",
"resource": "cryptography",
"strategy": "registry",
"subject_version": "46.0.3"
}
]
},
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "BREW-ansible@10-CVE-2018-10903",
"modified": "2026-09-09T23:41:05Z",
"published": "2026-08-13T16:35:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10903"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/pull/4342"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/d4378e42937b56f473ddade2667f919ce32208cb"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-fcf9-3qw3-gxmj"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2018-52.yaml"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3720-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
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{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "PyCA Cryptography vulnerable to GCM tag forgery",
"upstream": [
"GHSA-fcf9-3qw3-gxmj",
"CVE-2018-10903",
"PYSEC-2018-52"
]
}
brew-ansible@9-cve-2018-10903
Vulnerability from osv_homebrew
A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
| URL | Type | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "cryptography",
"resource_purl": "pkg:pypi/cryptography@46.0.3",
"upstream_fixed_in": "2.3"
},
"package": {
"ecosystem": "Homebrew",
"name": "ansible@9",
"purl": "pkg:brew/ansible%409"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "9.13.0_4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@46.0.3",
"name": "cryptography",
"resource": "cryptography",
"strategy": "registry",
"subject_version": "46.0.3"
}
]
},
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "BREW-ansible@9-CVE-2018-10903",
"modified": "2026-09-09T23:41:06Z",
"published": "2026-08-13T16:35:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10903"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/pull/4342"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/d4378e42937b56f473ddade2667f919ce32208cb"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-fcf9-3qw3-gxmj"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2018-52.yaml"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3720-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "PyCA Cryptography vulnerable to GCM tag forgery",
"upstream": [
"GHSA-fcf9-3qw3-gxmj",
"CVE-2018-10903",
"PYSEC-2018-52"
]
}
brew-azure-cli-cve-2018-10903
Vulnerability from osv_homebrew
A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
| URL | Type | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"resource": "cryptography",
"resource_purl": "pkg:pypi/cryptography@48.0.1",
"upstream_fixed_in": "2.3"
},
"package": {
"ecosystem": "Homebrew",
"name": "azure-cli",
"purl": "pkg:brew/azure-cli"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.89.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "registry",
"upstream_evidence": [
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@48.0.1",
"name": "cryptography",
"resource": "cryptography",
"strategy": "registry",
"subject_version": "48.0.1"
}
]
},
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "BREW-azure-cli-CVE-2018-10903",
"modified": "2026-09-09T23:43:05Z",
"published": "2026-08-13T16:37:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10903"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/pull/4342"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/d4378e42937b56f473ddade2667f919ce32208cb"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-fcf9-3qw3-gxmj"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2018-52.yaml"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3720-1"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "PyCA Cryptography vulnerable to GCM tag forgery",
"upstream": [
"GHSA-fcf9-3qw3-gxmj",
"CVE-2018-10903",
"PYSEC-2018-52"
]
}
brew-cryptography-cve-2018-10903
Vulnerability from osv_homebrew
A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
{
"affected": [
{
"ecosystem_specific": {
"fix": "bump",
"range_state": "fixed",
"upstream_fixed_in": "2.3"
},
"package": {
"ecosystem": "Homebrew",
"name": "cryptography",
"purl": "pkg:brew/cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "50.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"confidence": "high",
"source": "matched",
"strategy": "git",
"upstream_evidence": [
{
"ecosystem": "GIT",
"key": "https://github.com/pyca/cryptography",
"name": "https://github.com/pyca/cryptography",
"strategy": "git",
"subject_version": "50.0.1"
},
{
"ecosystem": "PyPI",
"key": "pkg:pypi/cryptography@50.0.1",
"name": "cryptography",
"strategy": "registry",
"subject_version": "50.0.1"
}
]
},
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "BREW-cryptography-CVE-2018-10903",
"modified": "2026-09-09T23:49:07Z",
"published": "2026-08-13T16:41:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "ADVISORY",
"url": "https://usn.ubuntu.com/3720-1/"
},
{
"type": "FIX",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "FIX",
"url": "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef"
}
],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"upstream": [
"CVE-2018-10903",
"GHSA-fcf9-3qw3-gxmj",
"PYSEC-2018-52"
]
}
CVE-2018-10903 (GCVE-0-2018-10903)
Vulnerability from cvelistv5 – Published: 2018-07-30 15:00 – Updated: 2024-08-05 07:54| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3600 | vendor-advisoryx_refsource_REDHAT |
| https://usn.ubuntu.com/3720-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://github.com/pyca/cryptography/pull/4342/co… | x_refsource_CONFIRM |
| Vendor | Product | Version | |
|---|---|---|---|
| [UNKNOWN] | python-cryptography |
Affected:
2.3
|
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"name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903",
"refsource": "CONFIRM",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"name": "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef",
"refsource": "CONFIRM",
"url": "https://github.com/pyca/cryptography/pull/4342/commits/688e0f673bfbf43fa898994326c6877f00ab19ef"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2018-10903",
"datePublished": "2018-07-30T15:00:00.000Z",
"dateReserved": "2018-05-09T00:00:00.000Z",
"dateUpdated": "2024-08-05T07:54:36.330Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
GHSA-FCF9-3QW3-GXMJ
Vulnerability from github – Published: 2018-07-31 18:28 – Updated: 2024-09-13 18:13A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "cryptography"
},
"ranges": [
{
"events": [
{
"introduced": "1.9.0"
},
{
"fixed": "2.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2018-10903"
],
"database_specific": {
"cwe_ids": [
"CWE-20"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:34:18Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "A flaw was found in python-cryptography versions between \u003e=1.9.0 and \u003c2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.",
"id": "GHSA-fcf9-3qw3-gxmj",
"modified": "2024-09-13T18:13:03Z",
"published": "2018-07-31T18:28:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-10903"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/pull/4342"
},
{
"type": "WEB",
"url": "https://github.com/pyca/cryptography/commit/d4378e42937b56f473ddade2667f919ce32208cb"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:3600"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10903"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-fcf9-3qw3-gxmj"
},
{
"type": "PACKAGE",
"url": "https://github.com/pyca/cryptography"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2018-52.yaml"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3720-1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "PyCA Cryptography vulnerable to GCM tag forgery"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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