Important: squid

Issue Overview:

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap. (CVE-2019-12526)

Affected Packages:

squid

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update squid to update your system.

New Packages:

aarch64:  
    squid-3.5.20-17.amzn2.7.7.aarch64  
    squid-sysvinit-3.5.20-17.amzn2.7.7.aarch64  
    squid-migration-script-3.5.20-17.amzn2.7.7.aarch64  
    squid-debuginfo-3.5.20-17.amzn2.7.7.aarch64  
  
i686:  
    squid-3.5.20-17.amzn2.7.7.i686  
    squid-sysvinit-3.5.20-17.amzn2.7.7.i686  
    squid-migration-script-3.5.20-17.amzn2.7.7.i686  
    squid-debuginfo-3.5.20-17.amzn2.7.7.i686  
  
src:  
    squid-3.5.20-17.amzn2.7.7.src  
  
x86_64:  
    squid-3.5.20-17.amzn2.7.7.x86_64  
    squid-sysvinit-3.5.20-17.amzn2.7.7.x86_64  
    squid-migration-script-3.5.20-17.amzn2.7.7.x86_64  
    squid-debuginfo-3.5.20-17.amzn2.7.7.x86_64  

Additional References

Red Hat: CVE-2019-12526

Mitre: CVE-2019-12526