CVE-2021-20276 — Vulnetix

CVE-2021-20276 PUBLISHED

A flaw was found in privoxy before 3.0.32. Invalid memory access with an invalid pattern passed to pcre_compile() may lead to denial of service.

EPSS 2.55% · 85.8th percentile

Risk Scores

EPSS Score

2.55%

85.8th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:16.04:LTS	privoxy	0, 3.0.23-3, 3.0.23-4
Ubuntu:Pro:14.04:LTS	privoxy	3.0.21-2, 0, 3.0.21-1
Ubuntu:18.04:LTS	privoxy	0, 3.0.26-3, 3.0.26-4
Ubuntu:20.04:LTS	privoxy	0, 3.0.28-2

Exploit Intelligence

CIRCL seen: CVE-2021-20276 (circl-sighting)
https://www.privoxy.org/announce.txt (circl)
https://bugzilla.redhat.com/show_bug.cgi?id=1936668 (circl)
[debian-lts-announce] 20210309 [SECURITY] [DLA 2587-1] privoxy security update (circl)
GLSA-202107-16 (circl)

Timeline

Mar 9, 2021 CVE Published
Mar 9, 2021 PoC Published
Apr 14, 2021 EPSS Score
Jun 23, 2021 EPSS Score
Oct 26, 2021 EPSS Score
Dec 27, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 28, 2022 EPSS Score
Apr 1, 2022 EPSS Score
May 1, 2022 EPSS Score
Jul 3, 2022 EPSS Score
Nov 6, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2021-20276 third-party-advisory
https://www.openwall.com/lists/oss-security/2021/02/28/1 third-party-advisory
https://www.privoxy.org/gitweb/?p=privoxy.git;a=commit;h=28512e5b62457f0ff6f2d72e3e5c9226b9e0203d third-party-advisory
https://ubuntu.com/security/notices/USN-4886-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2021-20276 third-party-advisory

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