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CVE-2018-5178
A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of data. This…
High8.1EPSS 4.9%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.9% · top 7.9% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
- Buffer overflow during UTF-8 to Unicode string conversion through legacy extension
- CWE-119 (opens in a new tab)All about CWE-119 and its CVEs
Affected products
- affected unspecified – < 52.8
- affected unspecified – < 52.8
- affected unspecified – < 52.8
References (16)
- RHSA-2018:1415 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- GLSA-201810-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- RHSA-2018:1726 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:1414 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- GLSA-201811-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-13/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3660-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 1040898 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- DSA-4199 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [debian-lts-announce] 20180525 [SECURITY] [DLA 1382-1] thunderbird security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20180511 [SECURITY] [DLA 1376-1] firefox-esr security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2018:1725 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 104138 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- DSA-4209 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://www.mozilla.org/security/advisories/mfsa2018-12/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=1443891 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-5178)Record last updated .