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Red Hat: RHSA-2020-2041-01 Important: Squid:4 Memory Issues

red hat
Calendar Grey May 6, 2020
Dist Redhat Esm H88
A new update for squid:4 has been released in Red Hat Enterprise Linux 8, addressing critical security vulnerabilities and enhancing overall system stability.
An update for the squid:4 module is now available for Red Hat Enterprise Linux 8

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.

Summary

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)
* squid: parsing of header Proxy-Authentication leads to memory corruption (CVE-2019-12525)
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.

Topics%20covered

Topics Covered

security advisory remote code execution memory corruption important squid redhat

References

https://access.redhat.com/security/cve/CVE-2019-12519 https://access.redhat.com/security/cve/CVE-2019-12525 https://access.redhat.com/security/cve/CVE-2020-11945 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: libecap-1.0.1-2.module+el8.1.0+4044+36416a77.src.rpm squid-4.4-8.module+el8.2.0+6449+6ba3df3e.1.src.rpm
aarch64: libecap-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm squid-4.4-8.module+el8.2.0+6449+6ba3df3e.1.aarch64.rpm squid-debuginfo-4.4-8.module+el8.2.0+6449+6ba3df3e.1.aarch64.rpm squid-debugsource-4.4-8.module+el8.2.0+6449+6ba3df3e.1.aarch64.rpm
ppc64le: libecap-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm squid-4.4-8.module+el8.2.0+6449+6ba3df3e.1.ppc64le.rpm squid-debuginfo-4.4-8.module+el8.2.0+6449+6ba3df3e.1.ppc64le.rpm squid-debugsource-4.4-8.module+el8.2.0+6449+6ba3df3e.1.ppc64le.rpm
s390x: libecap-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:2041-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2041
Issue date: 2020-05-06

Topic

An update for the squid:4 module is now available for Red Hat EnterpriseLinux 8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory remote code execution memory corruption important squid redhat

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1730535 - CVE-2019-12525 squid: parsing of header Proxy-Authentication leads to memory corruption

1827552 - CVE-2019-12519 squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow

1827563 - CVE-2020-11945 squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution

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