CVE-2018-12387 — Improper Input Validation in Mozilla Firefox

CWE-20 — Improper Input ValidationCWE-125 — Out-of-bounds Read9 documents8 sources
Severity
9.1CRITICALNVD
EPSS
33.4%
top 3.07%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Mozilla FirefoxMozilla Firefox ESRCanonical Ubuntu Linux+7 more
Timeline
PublishedOct 18
Latest updateMay 14

Description

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HExploitability: 3.9 | Impact: 5.2

Affected Packages6 packages

▶CVEListV5mozilla/firefoxunspecified — 62.0.3
▶NVDmozilla/firefox< 60.2.2+1
▶CVEListV5mozilla/firefox_esrunspecified — 60.2.2

Also affects: Debian Linux 9.0, Ubuntu Linux 14.04, 16.04, 18.04, Enterprise Linux 7.6, 7.5

Patches

Patch: bugzilla.mozilla.org ↗Patch: bugzilla.mozilla.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-vfrp-p8qm-9m8x: A vulnerability where the JavaScript JIT compiler inlines Array↗2022-05-14
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OSV
CVE-2018-12387: A vulnerability where the JavaScript JIT compiler inlines Array↗2018-10-18
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CVEList
CVE-2018-12387: A vulnerability where the JavaScript JIT compiler inlines Array↗2018-10-18
▶
OSV
firefox vulnerabilities↗2018-10-03
▶

📋Vendor Advisories

3
Ubuntu
Firefox vulnerabilities↗2018-10-03
▶
Red Hat
Mozilla: stack out-of-bounds read in Array.prototype.push↗2018-10-02
▶
Debian
CVE-2018-12387: firefox - A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push w...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-12387 Mozilla: stack out-of-bounds read in Array.prototype.push↗2018-10-02
▶
CVE-2018-12387 — Improper Input Validation in Mozilla | cvebase