CVE-2018-12363: canonical ubuntu_linux Use After Free

Modified

AliasesUBUNTU-CVE-2018-12363DEBIAN-CVE-2018-12363

Published 18-10-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-12363 is a high (CVSS 8.8) Use After Free vulnerability in canonical ubuntu_linux. EPSS estimates a 3.10% chance of exploitation in the next 30 days, higher than 87.7% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

8.8/10

010

High · v3.0 (NVD)

EPSS score

3.10%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

18-10-2018
PublishedVulnerability first disclosed.
05-08-2024
Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a pointer referencing it. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60, Thunderbird < 52.9, Firefox ESR < 60.1, Firefox ESR < 52.9, and Firefox < 61.

CVSS metrics

4 scores · 3 sources · 2 versions

v3.08.8v2.06.8

EPSS trend

Probability

3.10%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

No change 0.00 pp

From 3.10% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat6 products

Show all 6

Debian3 products

firefox-esr< 52.9.0esr-1
thunderbird< 1:52.9.0-1
debian_linuxEOL8.0 | 9.0

Mozilla3 products

firefox≥ unspecified, < 61 | < 61.0 | ≥ 53.0, < 60.1.0
firefox esr≥ unspecified, < 60.1 | ≥ unspecified, < 52.9 | < 52.9
thunderbird≥ unspecified, < 60 | ≥ unspecified, < 52.9 | < 52.9 | ≥ 52.9.1, < 60.0

Ubuntu2 products

firefox< 61.0+build3-0ubuntu0.14.04.2 | < 61.0+build3-0ubuntu0.16.04.2 | < 61.0+build3-0ubuntu0.18.04.1
thunderbird< 1:52.9.1+build3-0ubuntu0.14.04.1 | < 1:52.9.1+build3-0ubuntu0.16.04.1 | < 1:52.9.1+build3-0ubuntu0.18.04.1

Canonical1 product

ubuntu_linuxEOL14.04 | 16.04 | 17.10 | 18.04

5 vendors · 15 products

References

28 links

security.gentoo.org/glsa/201810-01Vendor AdvisoryX Refsource GENTOOThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-15/X Refsource CONFIRMVendor Advisory
access.redhat.com/errata/RHSA-2018:2112Vendor AdvisoryX Refsource REDHATThird Party Advisory
security.gentoo.org/glsa/201811-13Vendor AdvisoryX Refsource GENTOOThird Party Advisory
www.debian.org/security/2018/dsa-4235Vendor AdvisoryX Refsource DEBIANThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-18/X Refsource CONFIRMVendor Advisory
access.redhat.com/errata/RHSA-2018:2113Vendor AdvisoryX Refsource REDHATThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-16/X Refsource CONFIRMVendor Advisory
www.debian.org/security/2018/dsa-4244Vendor AdvisoryX Refsource DEBIANThird Party Advisory
www.securityfocus.com/bid/104560VDB EntryX Refsource BIDThird Party Advisory

Show all 28 references

www.securitytracker.com/id/1041193VDB EntryX Refsource SECTRACKThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-19/X Refsource CONFIRMVendor Advisory
access.redhat.com/errata/RHSA-2018:2252Vendor AdvisoryX Refsource REDHATThird Party Advisory
www.mozilla.org/security/advisories/mfsa2018-17/X Refsource CONFIRMVendor Advisory
lists.debian.org/debian-lts-announce/2018/07/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory
access.redhat.com/errata/RHSA-2018:2251Vendor AdvisoryX Refsource REDHATThird Party Advisory
usn.ubuntu.com/3705-1/Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
bugzilla.mozilla.org/show_bug.cgi?id=1464784X Refsource CONFIRMIssue TrackingPermissions RequiredVendor Advisory
usn.ubuntu.com/3714-1/Vendor AdvisoryX Refsource UBUNTUThird Party Advisory
lists.debian.org/debian-lts-announce/2018/06/msg00014.htmlMailing ListX Refsource MLISTThird Party Advisory
ubuntu.com/security/CVE-2018-12363REPORT
www.mozilla.org/en-US/security/advisories/mfsa2018-15/REPORT
www.mozilla.org/en-US/security/advisories/mfsa2018-17/REPORT
www.mozilla.org/en-US/security/advisories/mfsa2018-18/REPORT
ubuntu.com/security/notices/USN-3705-1Advisory
ubuntu.com/security/notices/USN-3714-1Advisory
www.cve.org/CVERecord?id=CVE-2018-12363REPORT
security-tracker.debian.org/tracker/CVE-2018-12363Advisory