CVE-2021-28662
First published: Thu May 20 2021(Updated: )
An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/squid | <=4.6-1+deb10u4<=4.6-1<=4.13-9<=4.6-1+deb10u5 | 4.13-10 4.6-1+deb10u6 |
| Squid-Cache Squid | >=4.0.1<4.15 | |
| Squid-Cache Squid | >=5.0<5.0.6 | |
| Debian Debian Linux | =10.0 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| debian/squid | 4.6-1+deb10u7 4.6-1+deb10u8 4.13-10+deb11u2 5.7-2 6.5-1 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2021-28662
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28662
- https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h
- https://security-tracker.debian.org/tracker/CVE-2021-28651
- https://security-tracker.debian.org/tracker/CVE-2021-28652
- https://security-tracker.debian.org/tracker/CVE-2021-31806
- https://security-tracker.debian.org/tracker/CVE-2021-31808
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988891
- http://seclists.org/fulldisclosure/2023/Oct/14
- http://www.openwall.com/lists/oss-security/2023/10/11/3
- http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch
- https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
- https://www.debian.org/security/2021/dsa-4924
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-b1c37c9e7b30d0efb5e5ccf8200f2a646b9c36f8.patch
- https://megamansec.github.io/Squid-Security-Audit/vary-other-assert.html
Frequently Asked Questions
What is CVE-2021-28662?
CVE-2021-28662 is a vulnerability discovered in Squid 4.x before 4.15 and 5.x before 5.0.6.
What is the severity of CVE-2021-28662?
CVE-2021-28662 has a severity rating of 6.5 (high).
How does CVE-2021-28662 affect Squid?
CVE-2021-28662 can result in a denial of service if a remote server sends a specific response header over HTTP or HTTPS.
How can I fix CVE-2021-28662 in Squid?
To fix CVE-2021-28662, update Squid to version 4.15 or 5.0.6, depending on the version you are using.
Where can I find more information about CVE-2021-28662?
You can find more information about CVE-2021-28662 on the following references: [1] [2] [3].
- collector/debian-bugs
- alias/CVE-2021-28662
- collector/nvd-index
- collector/nvd-api
- collector/security-tracker-debian
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/tags
- agent/type
- agent/description
- agent/event
- agent/softwarecombine
- agent/last-modified-date
- agent/first-publish-date
- agent/remedy
- package-manager/debian
- vendor/squid-cache
- canonical/squid-cache squid
- version/squid-cache squid/4.0.1
- version/squid-cache squid/5.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34