RHSA-2020:2038 - Security Advisory

Topic

An update for the squid:4 module is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Security Fix(es):

• squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow (CVE-2019-12519)
• squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution (CVE-2020-11945)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the squid service will be restarted automatically.

Affected Products

• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.0 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.0 x86_64

Fixes

• BZ - 1827552 - CVE-2019-12519 squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow
• BZ - 1827563 - CVE-2020-11945 squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution

CVEs

• CVE-2019-12519
• CVE-2020-11945

References

• https://access.redhat.com/security/updates/classification/#important