CVE catalog

CVE-2020-12393

firefox-esr: CVE-2020-12393

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: May 5, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.01% · Oct 25, 2026

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	firefox-esr	sid	`153.5.1esr-1`	not affected
Debian	firefox-esr	forky	`153.5.1esr-1`	not affected
Debian	firefox-esr	trixie	`140.15.0esr-1~deb13u1`	not affected
Debian	firefox-esr	trixie-security	`153.5.1esr-1~deb13u1`	not affected
Debian	firefox-esr	bookworm	`140.12.0esr-1~deb12u1`	not affected
Debian	firefox-esr	bookworm-security	`153.5.1esr-1~deb12u1`	not affected
Debian	thunderbird	sid	`1:153.5.1esr-1`	not affected
Debian	thunderbird	forky	`1:153.5.0esr-1`	not affected
Debian	thunderbird	trixie	`1:140.12.0esr-1~deb13u1`	not affected
Debian	thunderbird	trixie-security	`1:153.5.1esr-1~deb13u2`	not affected
Debian	thunderbird	bookworm	`1:140.12.0esr-1~deb12u1`	not affected
Debian	thunderbird	bookworm-security	`1:153.5.1esr-1~deb12u1`	not affected
Ubuntu	mozjs52	18.04	`52.3.1-0ubuntu3`	vulnerable
Ubuntu	mozjs52	18.04	`52.3.1-7fakesync1`	vulnerable
Ubuntu	mozjs52	18.04	`52.8.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs52	18.04	`52.9.1-0ubuntu0.18.04.1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu1`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu3`	vulnerable
Ubuntu	mozjs38	18.04	`38.8.0~repack1-0ubuntu4`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-1~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.5.0-2~fakesync`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1`	vulnerable
Ubuntu	mozjs68	20.04	`68.6.0-1ubuntu1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1build1`	vulnerable
Ubuntu	mozjs52	20.04	`52.9.1-1ubuntu3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	firefox-esr	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	firefox-esr	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	firefox-esr	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	firefox-esr	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Debian	thunderbird	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	thunderbird	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	thunderbird	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	thunderbird	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[firefox-esr]Unknown
Details (4)
- 140.12.0esr-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-ach]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-af]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-all]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-an]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-ar]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-ast]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-az]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-be]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-bg]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-bn]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-br]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-bs]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-ca]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-cak]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-ca-valencia]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-cs]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-cy]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-da]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
[firefox-esr-l10n-de]Unknown
Source package: [firefox-esr]
Details (4)
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.12.0esr-1~deb12u1 · all · bookworm
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm
- 140.14.0esr-1~deb12u1 · all · bookworm-security
  Not affected
  dsa · firefox-esr · debian · bookworm

Next results

Observed: Oct 23, 2026, 5:47:12 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]