CVE-2021-20210
published 2021-03-25CVE-2021-20210: A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system…
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.35%
81.9th percentile
A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | privoxy | < privoxy 3.0.29-1 (bookworm) | privoxy 3.0.29-1 (bookworm) |
| privoxy | privoxy | < 3.0.29 | 3.0.29 |
| privoxy | privoxy | — | — |
| privoxy | privoxy | >= 0 < 3.0.29-1 | 3.0.29-1 |
| privoxy | privoxy | >= 0 < 3.0.29-1 | 3.0.29-1 |
| privoxy | privoxy | >= 0 < 3.0.29-1 | 3.0.29-1 |
| privoxy | privoxy | >= 0 < 3.0.29-1 | 3.0.29-1 |
| privoxy | privoxy | >= 0 < 3.0.24-1ubuntu0.1 | 3.0.24-1ubuntu0.1 |
| privoxy | privoxy | >= 0 < 3.0.26-5ubuntu0.1 | 3.0.26-5ubuntu0.1 |
| privoxy | privoxy | >= 0 < 3.0.28-2ubuntu0.1 | 3.0.28-2ubuntu0.1 |
| privoxy | privoxy | >= 0 < 3.0.21-7+deb8u1ubuntu0.1~esm1 | 3.0.21-7+deb8u1ubuntu0.1~esm1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
osv7.5HIGH
cisa7.8HIGH
vendor_debian7.5HIGH
vendor_ubuntu7.5HIGH
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GHSA
GHSA-j4jv-9rjv-h6jm: A flaw was found in Privoxy in versions before 3
ghsa_unreviewed·2022-05-24
CVE-2021-20210 [HIGH] CWE-401 GHSA-j4jv-9rjv-h6jm: A flaw was found in Privoxy in versions before 3
A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.
OSV
CVE-2021-20210: A flaw was found in Privoxy in versions before 3
osv·2021-03-25·CVSS 7.5
CVE-2021-20210 [HIGH] CVE-2021-20210: A flaw was found in Privoxy in versions before 3
A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.
OSV
privoxy vulnerabilities
osv·2021-03-22·CVSS 7.5
CVE-2020-35502 [HIGH] privoxy vulnerabilities
privoxy vulnerabilities
It was discovered that Privoxy incorrectly handled CGI requests. An attacker
could possibly use this issue to cause a denial of service or obtain sensitive
information. (CVE-2020-35502, CVE-2021-20209, CVE-2021-20210,
CVE-2021-20213, CVE-2021-20215, CVE-2021-20216, CVE-2021-20217,
CVE-2021-20272, CVE-2021-20273, CVE-2021-20275)
It was discovered that Privoxy incorrectly handled certain regular
expressions. An attacker could possibly use this issue to cause a denial of
service or obtain sensitive information. (CVE-2021-20212, CVE-2021-20276)
It was discovered that Privoxy incorrectly handled client tags. An attacker
could possibly use this issue to cause Privoxy to consume resources, resulting
in a denial of service. This issue only affected Ubuntu 18.04 LTS,
Ubun
CISA
Linux Kernel Heap Out-of-Bounds Write Vulnerability
cisa·2025-10-06·CVSS 7.8
CVE-2021-22555 [HIGH] CWE-787 Linux Kernel Heap Out-of-Bounds Write Vulnerability
Vulnerability: Linux Kernel Heap Out-of-Bounds Write Vulnerability
Affected: Linux Kernel
Linux Kernel contains a heap out-of-bounds write vulnerability that could allow an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space.
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21 ; https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d ; https://security.netapp.com/advisory/ntap-20210
Ubuntu
Privoxy vulnerabilities
vendor_ubuntu·2021-03-22·CVSS 7.5
CVE-2021-20213 [HIGH] Privoxy vulnerabilities
Title: Privoxy vulnerabilities
Summary: Several security issues were fixed in Privoxy.
It was discovered that Privoxy incorrectly handled CGI requests. An attacker
could possibly use this issue to cause a denial of service or obtain sensitive
information. (CVE-2020-35502, CVE-2021-20209, CVE-2021-20210,
CVE-2021-20213, CVE-2021-20215, CVE-2021-20216, CVE-2021-20217,
CVE-2021-20272, CVE-2021-20273, CVE-2021-20275)
It was discovered that Privoxy incorrectly handled certain regular
expressions. An attacker could possibly use this issue to cause a denial of
service or obtain sensitive information. (CVE-2021-20212, CVE-2021-20276)
It was discovered that Privoxy incorrectly handled client tags. An attacker
could possibly use this issue to cause Privoxy to consume resources, resulting
in a de
Debian
CVE-2021-20210: privoxy - A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-s...
vendor_debian·2021·CVSS 7.5
CVE-2021-20210 [HIGH] CVE-2021-20210: privoxy - A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-s...
A flaw was found in Privoxy in versions before 3.0.29. Memory leak in the show-status CGI handler when no filter files are configured can lead to a system crash.
Scope: local
bookworm: resolved (fixed in 3.0.29-1)
bullseye: resolved (fixed in 3.0.29-1)
forky: resolved (fixed in 3.0.29-1)
sid: resolved (fixed in 3.0.29-1)
trixie: resolved (fixed in 3.0.29-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-03-25
Published