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AUSCERT External Security Bulletin Redistribution
ESB-2019.2692
USN-4065-1: Squid vulnerabilities
19 July 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Squid
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-12529 CVE-2019-12527 CVE-2019-12525
Reference: ESB-2019.2609
Original Bulletin:
https://usn.ubuntu.com/4065-1/
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USN-4065-1: Squid vulnerabilities
18 July 2019
squid, squid3 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in Squid.
Software Description
o squid - Web proxy cache server
o squid3 - Web proxy cache server
Details
It was discovered that Squid incorrectly handled Digest authentication. A
remote attacker could possibly use this issue to cause Squid to crash,
resulting in a denial of service. (CVE-2019-12525)
It was discovered that Squid incorrectly handled Basic authentication. A remote
attacker could use this issue to cause Squid to crash, resulting in a denial of
service, or possibly execute arbitrary code. This issue only affected Ubuntu
19.04. (CVE-2019-12527)
It was discovered that Squid incorrectly handled Basic authentication. A remote
attacker could possibly use this issue to cause Squid to crash, resulting in a
denial of service. (CVE-2019-12529)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
squid - 4.4-1ubuntu2.2
Ubuntu 18.04 LTS
squid3 - 3.5.27-1ubuntu1.3
Ubuntu 16.04 LTS
squid3 - 3.5.12-1ubuntu7.8
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-12525
o CVE-2019-12527
o CVE-2019-12529
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