Vulnerability Details : CVE-2021-20276
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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2021-20276
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20276
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20276
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-20276
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: secalert@redhat.com (Secondary)
References for CVE-2021-20276
-
https://www.privoxy.org/announce.txt
Release Notes;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1936668
1936668 – (CVE-2021-20276) CVE-2021-20276 privoxy: Invalid memory access with an invalid pattern passed to pcre_compile()Issue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/03/msg00009.html
[SECURITY] [DLA 2587-1] privoxy security updateThird Party Advisory
-
https://security.gentoo.org/glsa/202107-16
Privoxy: Multiple vulnerabilities (GLSA 202107-16) — Gentoo securityThird Party Advisory
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