HTTP: Squid Proxy CVE-2019-12527 Heap Buffer Overflow
This signature detects attempts to exploit a known vulnerability in the Squid Proxy. A successful attack can lead to a buffer overflow and arbitrary remote code execution within the context of the process.
Extended Description
An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
Affected Products
Redhat enterprise_linux_server_tus
Short Name
HTTP:PROXY:SQUID-CVE-2019-12527
Severity
Major
Recommended
True
Recommended Action
Drop
Category
HTTP
Keywords
Buffer CVE-2019-12527 Heap Overflow Proxy Squid bid:109143
Release Date
08/26/2019
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
srx-branch-12.3
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx-12.3
vmx-19.3
srx-12.3
Sigpack Version
3590
False Positive
Unknown
Vendors
Fedoraproject
Squid-cache
Debian
Redhat
Canonical
CVSS Score
6.8