CVE-2021-28652: Medium severity Squid-Cache Squid vulnerability

Published May 19, 2021
·
Updated

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

Other sources

Due to an incorrect parser validation bug Squid is vulnerable to a Denial of Service attack against the Cache Manager API. This problem allows a trusted client to trigger memory leaks which over time lead to a Denial of Service against Squid and the machine it is operating on. This attack is limited to clients with Cache Manager API access privilege.

Upstream security advisory: https://github.com/squid-cache/squid/security/advisories/GHSA-m47m-9hvw-7447

— Red Hat

Affected Software

10 affected componentsFixes available
debian/squid<=4.6-1+deb10u5, <=4.6-1, <=4.13-9, <=4.6-1+deb10u4
4.13-104.6-1+deb10u6
debian/squid
4.13-10+deb11u35.7-2+deb12u26.13-1
Squid-Cache Squid>=1.0<4.15
Squid-Cache Squid>=5.0<5.0.6
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Fedoraproject Fedora=33
Fedoraproject Fedora=34
redhat/squid<4.15
4.15
redhat/squid<5.0.6
5.0.6

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/squid to a version that resolves this vulnerability.

    Fixed in 4.13-10Fixed in 4.6-1+deb10u6
  2. Upgrade

    Upgrade debian/squid to a version that resolves this vulnerability.

    Fixed in 4.13-10+deb11u3Fixed in 5.7-2+deb12u2Fixed in 6.13-1
  3. Upgrade

    Upgrade redhat/squid to a version that resolves this vulnerability.

    Fixed in 4.15
  4. Upgrade

    Upgrade redhat/squid to a version that resolves this vulnerability.

    Fixed in 5.0.6
  5. Upgrade

    Upgrade squid-cache/squid to a version that resolves this vulnerability.

    Fixed in 4.15
  6. Upgrade

    Upgrade squid-cache/squid to a version that resolves this vulnerability.

    Fixed in 5.0.6

Event History

May 19, 2021
Data Sourced
via Red Hat·03:10 PM
DescriptionSeverityAffected Software
May 27, 2021
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·12:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the vulnerability ID for this issue in Squid?

The vulnerability ID for this issue in Squid is CVE-2021-28652.

2

What is the severity of CVE-2021-28652?

The severity of CVE-2021-28652 is high.

3

How does CVE-2021-28652 impact Squid?

CVE-2021-28652 allows a trusted client to trigger memory leaks that over time lead to a Denial of Service attack against the Cache Manager API.

4

Which versions of Squid are affected by CVE-2021-28652?

Versions before 4.15 and 5.x before 5.0.6 of Squid are affected by CVE-2021-28652.

5

How can I fix the vulnerability in Squid?

To fix the vulnerability in Squid, update to version 4.15 or 5.0.6 or later.

Company

Resources

Contact

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