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CVE-2021-28662

Date: May 26, 2021

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.

Language: C++

Severity Score

Related Resources (18)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-28662
https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e
https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
https://security.archlinux.org/CVE-2021-28662
http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch
http://seclists.org/fulldisclosure/2023/Oct/14
https://access.redhat.com/security/cve/CVE-2021-28662
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
https://nvd.nist.gov/vuln/detail/CVE-2021-28662
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
https://security.alpinelinux.org/vuln/CVE-2021-28662
https://github.com/squid-cache/squid/commit/b1c37c9e7b30d0efb5e5ccf8200f2a646b9c36f8
https://www.debian.org/security/2021/dsa-4924
https://security-tracker.debian.org/tracker/CVE-2021-28662
http://www.openwall.com/lists/oss-security/2023/10/11/3
https://www.mend.io/vulnerability-database/CVE-2021-28662

Severity Score

Weakness Type (CWE)

Improper Encoding or Escaping of Output

CWE-116

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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