Vulnerability-Lookup

FKIE_CVE-2018-5178

Vulnerability from fkie_nvd - Published: 2018-06-11 21:29 - Updated: 2026-06-17 01:59

Severity

8.1 (High) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This vulnerability requires the use of a malicious or vulnerable legacy extension in order to occur. This vulnerability affects Thunderbird ESR < 52.8, Thunderbird < 52.8, and Firefox ESR < 52.8.

References

URL	Tags
security@mozilla.org	http://www.securityfocus.com/bid/104138	Third Party Advisory, VDB Entry
security@mozilla.org	http://www.securitytracker.com/id/1040898	Third Party Advisory, VDB Entry
security@mozilla.org	https://access.redhat.com/errata/RHSA-2018:1414	Third Party Advisory
security@mozilla.org	https://access.redhat.com/errata/RHSA-2018:1415	Third Party Advisory
security@mozilla.org	https://access.redhat.com/errata/RHSA-2018:1725	Third Party Advisory
security@mozilla.org	https://access.redhat.com/errata/RHSA-2018:1726	Third Party Advisory
security@mozilla.org	https://bugzilla.mozilla.org/show_bug.cgi?id=1443891	Issue Tracking, Permissions Required, Vendor Advisory
security@mozilla.org	https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html	Mailing List, Third Party Advisory
security@mozilla.org	https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html	Mailing List, Third Party Advisory
security@mozilla.org	https://security.gentoo.org/glsa/201810-01	Third Party Advisory
security@mozilla.org	https://security.gentoo.org/glsa/201811-13	Third Party Advisory
security@mozilla.org	https://usn.ubuntu.com/3660-1/	Third Party Advisory
security@mozilla.org	https://www.debian.org/security/2018/dsa-4199	Third Party Advisory
security@mozilla.org	https://www.debian.org/security/2018/dsa-4209	Third Party Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2018-12/	Vendor Advisory
security@mozilla.org	https://www.mozilla.org/security/advisories/mfsa2018-13/	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/104138	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	http://www.securitytracker.com/id/1040898	Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	https://access.redhat.com/errata/RHSA-2018:1414	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://access.redhat.com/errata/RHSA-2018:1415	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://access.redhat.com/errata/RHSA-2018:1725	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://access.redhat.com/errata/RHSA-2018:1726	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugzilla.mozilla.org/show_bug.cgi?id=1443891	Issue Tracking, Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/201810-01	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/201811-13	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/3660-1/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2018/dsa-4199	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2018/dsa-4209	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.mozilla.org/security/advisories/mfsa2018-12/	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.mozilla.org/security/advisories/mfsa2018-13/	Vendor Advisory

Impacted products

Vendor	Product	Version
debian	debian_linux	7.0
debian	debian_linux	8.0
debian	debian_linux	9.0
mozilla	firefox	*
mozilla	thunderbird	*
mozilla	thunderbird_esr	*
canonical	ubuntu_linux	14.04
canonical	ubuntu_linux	16.04
canonical	ubuntu_linux	17.10
canonical	ubuntu_linux	18.04
redhat	enterprise_linux_desktop	6.0
redhat	enterprise_linux_desktop	7.0
redhat	enterprise_linux_server	6.0
redhat	enterprise_linux_server	7.0
redhat	enterprise_linux_server_aus	7.6
redhat	enterprise_linux_server_eus	7.5
redhat	enterprise_linux_server_eus	7.6
redhat	enterprise_linux_server_tus	7.6
redhat	enterprise_linux_workstation	6.0
redhat	enterprise_linux_workstation	7.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Thunderbird ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "52.8",
              "status": "affected",
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          ]
        },
        {
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          "vendor": "Mozilla",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
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          "vendor": "Mozilla",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This vulnerability requires the use of a malicious or vulnerable legacy extension in order to occur. This vulnerability affects Thunderbird ESR \u003c 52.8, Thunderbird \u003c 52.8, and Firefox ESR \u003c 52.8."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un desbordamiento de b\u00fafer durante la conversi\u00f3n de cadenas UTF8 a Unicode dentro de JavaScript con cantidades de datos extremadamente grandes. Esta vulnerabilidad requiere el uso de una extensi\u00f3n heredada maliciosa o vulnerable para que se produzca. Esta vulnerabilidad afecta a las versiones anteriores a la 52.8 de Thunderbird ESR, las versiones anteriores a la 52.8 de Thunderbird y las versiones anteriores a la 52.8 de Firefox ESR."
    }
  ],
  "id": "CVE-2018-5178",
  "lastModified": "2026-06-17T01:59:46.570",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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        "cvssData": {
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          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2018-06-11T21:29:16.203",
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    {
      "source": "security@mozilla.org",
      "tags": [
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2018-12/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mozilla.org/security/advisories/mfsa2018-13/"
    }
  ],
  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2018-5178 (GCVE-0-2018-5178)

Vulnerability from cvelistv5 – Published: 2018-06-11 21:00 – Updated: 2024-08-05 05:26

Summary

Severity

No CVSS data available.

CWE

Buffer overflow during UTF-8 to Unicode string conversion through legacy extension

Assigner

mozilla mitre root

References

16 references

URL	Tags
https://access.redhat.com/errata/RHSA-2018:1415	vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201810-01	vendor-advisoryx_refsource_GENTOO
https://access.redhat.com/errata/RHSA-2018:1726	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2018:1414	vendor-advisoryx_refsource_REDHAT
https://security.gentoo.org/glsa/201811-13	vendor-advisoryx_refsource_GENTOO
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_CONFIRM
https://usn.ubuntu.com/3660-1/	vendor-advisoryx_refsource_UBUNTU
http://www.securitytracker.com/id/1040898	vdb-entryx_refsource_SECTRACK
https://www.debian.org/security/2018/dsa-4199	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:1725	vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/104138	vdb-entryx_refsource_BID
https://www.debian.org/security/2018/dsa-4209	vendor-advisoryx_refsource_DEBIAN
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_CONFIRM
https://bugzilla.mozilla.org/show_bug.cgi?id=1443891	x_refsource_CONFIRM

Impacted products

3 products

Vendor	Product	Version
Mozilla	Thunderbird ESR	Affected: unspecified , < 52.8 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 52.8 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 52.8 (custom)

Date Public

2018-05-09 00:00

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.