CVE-2021-46784
First published: Sun Jul 17 2022(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid-Cache Squid | >=3.0<=3.5.28 | |
| Squid-Cache Squid | >=4.0<=4.17 | |
| Squid-Cache Squid | >=5.0<5.6 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| Debian Debian Linux | =12.0 | |
| debian/squid | 4.13-10+deb11u3 5.7-2+deb12u1 6.10-1 |
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Reference Links
- https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9
- http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch
- http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch
- https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w
- https://security-tracker.debian.org/tracker/CVE-2021-46784
- https://security.netapp.com/advisory/ntap-20221223-0007/
- http://www.openwall.com/lists/oss-security/2023/10/13/1
- http://www.openwall.com/lists/oss-security/2023/10/13/10
- http://www.openwall.com/lists/oss-security/2023/10/21/1
- https://github.com/squid-cache/squid/commit/780c4ea1b4c9d2fb41f6962aa6ed73ae57f74b2b
- https://megamansec.github.io/Squid-Security-Audit/gopher-assert.html
Frequently Asked Questions
What is the vulnerability ID of this Squid vulnerability?
The vulnerability ID is CVE-2021-46784.
What is the severity level of CVE-2021-46784?
The severity level of CVE-2021-46784 is medium (6.5).
What is affected by CVE-2021-46784?
Squid versions 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6 are affected by CVE-2021-46784.
What is the impact of CVE-2021-46784?
CVE-2021-46784 can cause a Denial of Service (DoS) when processing long Gopher server responses.
How can I fix CVE-2021-46784?
To fix CVE-2021-46784, it is recommended to update to Squid versions 4.6-1+deb10u7, 4.6-1+deb10u8, 4.13-10+deb11u2, or 5.7-2 (or later).
- collector/nvd-index
- collector/nvd-api
- agent/author
- agent/type
- agent/first-publish-date
- agent/weakness
- agent/remedy
- agent/severity
- agent/references
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/softwarecombine
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- agent/event
- agent/tags
- agent/trending
- vendor/squid-cache
- canonical/squid-cache squid
- version/squid-cache squid/3.0
- version/squid-cache squid/3.5.28
- version/squid-cache squid/4.0
- version/squid-cache squid/4.17
- version/squid-cache squid/5.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0
- version/debian debian linux/11.0
- version/debian debian linux/12.0
- package-manager/debian