Medium severity · published Jul 17, 2022
CVE-2021-46784
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses
6.5
CVSS
5.1%
EPSS
No
On KEV
Description
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0; 11.0; 12.0 · source: NVD
SQ
Squid · Squid-cache
3.0 through 3.5.28; 4.0 through 4.17; 5.0 before 5.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46784
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-46784
www.openwall.com
http://www.openwall.com/lists/oss-security/2023/10/13/1
www.openwall.com
http://www.openwall.com/lists/oss-security/2023/10/13/10
www.openwall.com
http://www.openwall.com/lists/oss-security/2023/10/21/1
Broken Link
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch
Patch
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch
Patch
https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9
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