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CVE-2021-26813 (GCVE-0-2021-26813)
Vulnerability from cvelistv5 – Published: 2021-03-03 15:17 – Updated: 2024-08-03 20:33
VLAI?
EPSS
Summary
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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OPENSUSE-SU-2021:0429-1
Vulnerability from csaf_opensuse - Published: 2021-03-16 17:08 - Updated: 2021-03-16 17:08Summary
Security update for python-markdown2
Severity
Moderate
Notes
Title of the patch: Security update for python-markdown2
Description of the patch: This update for python-markdown2 fixes the following issues:
Update to 2.4.0 (boo#1181270):
- [pull #377] Fixed bug breaking strings elements in metadata lists
- [pull #380] When rendering fenced code blocks, also add the
language-LANG class
- [pull #387] Regex DoS fixes (CVE-2021-26813, boo#1183171)
- Switch off failing tests (gh#trentm/python-markdown2#388),
ignore failing test suite.
update to 2.3.9:
- [pull #335] Added header support for wiki tables
- [pull #336] Reset _toc when convert is run
- [pull #353] XSS fix
- [pull #350] XSS fix
- Add patch to fix unsanitized input for cross-site scripting (boo#1171379)
Patchnames: openSUSE-2021-429
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.5 (High)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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OPENSUSE-SU-2024:11237-1
Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00Summary
python36-markdown2-2.4.0-2.4 on GA media
Severity
Moderate
Notes
Title of the patch: python36-markdown2-2.4.0-2.4 on GA media
Description of the patch: These are all security issues fixed in the python36-markdown2-2.4.0-2.4 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2024-11237
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
6.1 (Medium)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
7.5 (High)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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OPENSUSE-SU-2021:0451-1
Vulnerability from csaf_opensuse - Published: 2021-03-19 23:06 - Updated: 2021-03-19 23:06Summary
Security update for python-markdown2
Severity
Moderate
Notes
Title of the patch: Security update for python-markdown2
Description of the patch: This update for python-markdown2 fixes the following issues:
Update to 2.4.0 (boo#1181270):
- [pull #377] Fixed bug breaking strings elements in metadata lists
- [pull #380] When rendering fenced code blocks, also add the
language-LANG class
- [pull #387] Regex DoS fixes (CVE-2021-26813, boo#1183171)
- Switch off failing tests (gh#trentm/python-markdown2#388),
ignore failing test suite.
update to 2.3.9:
- [pull #335] Added header support for wiki tables
- [pull #336] Reset _toc when convert is run
- [pull #353] XSS fix
- [pull #350] XSS fix
- Add patch to fix unsanitized input for cross-site scripting (boo#1171379)
This update was imported from the openSUSE:Leap:15.2:Update update project.
Patchnames: openSUSE-2021-451
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
7.5 (High)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
| URL | Category | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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OPENSUSE-SU-2024:14146-1
Vulnerability from csaf_opensuse - Published: 2024-07-12 00:00 - Updated: 2024-07-12 00:00Summary
python310-markdown2-2.4.13-1.2 on GA media
Severity
Moderate
Notes
Title of the patch: python310-markdown2-2.4.13-1.2 on GA media
Description of the patch: These are all security issues fixed in the python310-markdown2-2.4.13-1.2 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2024-14146
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
6.1 (Medium)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
7.5 (High)
Vendor Fix
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
References
| URL | Category | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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]
},
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"url": "https://www.suse.com/security/cve/CVE-2018-5773"
}
],
"remediations": [
{
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"details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
"product_ids": [
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"openSUSE Tumbleweed:python312-markdown2-2.4.13-1.2.s390x",
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}
],
"scores": [
{
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"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
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"openSUSE Tumbleweed:python311-markdown2-2.4.13-1.2.x86_64",
"openSUSE Tumbleweed:python312-markdown2-2.4.13-1.2.aarch64",
"openSUSE Tumbleweed:python312-markdown2-2.4.13-1.2.ppc64le",
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}
],
"threats": [
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"details": "important"
}
],
"title": "CVE-2018-5773"
},
{
"cve": "CVE-2021-26813",
"ids": [
{
"system_name": "SUSE CVE Page",
"text": "https://www.suse.com/security/cve/CVE-2021-26813"
}
],
"notes": [
{
"category": "general",
"text": "markdown2 \u003e=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.",
"title": "CVE description"
}
],
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"summary": "SUSE Bug 1183171 for CVE-2021-26813",
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"openSUSE Tumbleweed:python311-markdown2-2.4.13-1.2.aarch64",
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}
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}
GHSA-JR9P-R423-9M2R
Vulnerability from github – Published: 2021-06-02 21:44 – Updated: 2024-09-30 20:15
VLAI?
Summary
markdown2 Regular Expression Denial of Service
Details
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "markdown2"
},
"ranges": [
{
"events": [
{
"introduced": "1.0.1.18"
},
{
"fixed": "2.4.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-26813"
],
"database_specific": {
"cwe_ids": [
"CWE-1333"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-12T21:02:47Z",
"nvd_published_at": "2021-03-03T16:15:00Z",
"severity": "HIGH"
},
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"id": "GHSA-jr9p-r423-9m2r",
"modified": "2024-09-30T20:15:06Z",
"published": "2021-06-02T21:44:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26813"
},
{
"type": "WEB",
"url": "https://github.com/trentm/python-markdown2/pull/387"
},
{
"type": "WEB",
"url": "https://github.com/trentm/python-markdown2/commit/7b651260739647de5198323e0445b1618750c374"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-jr9p-r423-9m2r"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/markdown2/PYSEC-2021-20.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/trentm/python-markdown2"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY"
}
],
"schema_version": "1.4.0",
"severity": [
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"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "markdown2 Regular Expression Denial of Service "
}
PYSEC-2021-20
Vulnerability from pysec - Published: 2021-03-03 16:15 - Updated: 2021-05-10 03:15
VLAI?
Details
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
Impacted products
| Name | purl | markdown2 | pkg:pypi/markdown2 |
|---|
Aliases
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "markdown2",
"purl": "pkg:pypi/markdown2"
},
"ranges": [
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"events": [
{
"introduced": "1.0.1.18"
},
{
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}
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}
],
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"1.0.1.19",
"1.1.0",
"1.1.1",
"1.2.0",
"1.3.0",
"1.3.1",
"1.4.0",
"1.4.1",
"1.4.2",
"2.0.0",
"2.0.1",
"2.1.0",
"2.2.0",
"2.2.1",
"2.2.2",
"2.2.3",
"2.3.0",
"2.3.1",
"2.3.2",
"2.3.3",
"2.3.4",
"2.3.5",
"2.3.6",
"2.3.7",
"2.3.8",
"2.3.9",
"2.3.10"
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"aliases": [
"CVE-2021-26813",
"GHSA-jr9p-r423-9m2r"
],
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"id": "PYSEC-2021-20",
"modified": "2021-05-10T03:15:00Z",
"published": "2021-03-03T16:15:00Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/trentm/python-markdown2/pull/387"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/"
},
{
"type": "ADVISORY",
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}
]
}
FKIE_CVE-2021-26813
Vulnerability from fkie_nvd - Published: 2021-03-03 16:15 - Updated: 2024-11-21 05:56
Severity ?
Summary
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://github.com/trentm/python-markdown2/pull/387 | Exploit, Third Party Advisory | |
| cve@mitre.org | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/ | ||
| cve@mitre.org | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/ | ||
| cve@mitre.org | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/ | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/trentm/python-markdown2/pull/387 | Exploit, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/ | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/ | ||
| af854a3a-2127-422b-91ae-364da2661108 | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/ |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| markdown2_project | markdown2 | * | |
| fedoraproject | fedora | 32 | |
| fedoraproject | fedora | 33 | |
| fedoraproject | fedora | 34 |
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"versionEndExcluding": "2.4.0",
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GSD-2021-26813
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-26813",
"description": "markdown2 \u003e=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.",
"id": "GSD-2021-26813",
"references": [
"https://www.suse.com/security/cve/CVE-2021-26813.html",
"https://security.archlinux.org/CVE-2021-26813"
]
},
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- 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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