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CVE

CVE-2018-5178

A buffer overflow was found during UTF8 to Unicode string conversion within JavaScript with extremely large amounts of d

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.

HIGH · CVSS 8.1 EPSS 0.18164
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 5% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
▤

Affected Products & Versions

11
debian linuxall versions
mozilla firefox< 52.8.0
mozilla thunderbird< 52.8.0
mozilla thunderbird esr< 52.8.0
canonical ubuntu linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.0 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Jun 2018 · 09:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

11
suse-csafopenSUSE-SU-2024:10601-1
suse-csafSUSE-SU-2019:2872-1
suse-csafSUSE-SU-2018:1334-2
suse-csafSUSE-SU-2018:2298-1
usnUSN-3660-1
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/104138Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040898Third Party AdvisoryVDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1443891Issue TrackingPermissions RequiredVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00007.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00013.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
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