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Debian LTS Advisory ([SECURITY] [DLA 1858-1] squid3 security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

4 years ago

Summary

The remote host is missing an update for the 'squid3' package(s) announced via the DSA-1858-1 advisory.

Insight

Insight

Squid, a high-performance proxy caching server for web clients, has been found vulnerable to denial of service attacks associated with HTTP authentication header processing. CVE-2019-12525 Due to incorrect buffer management Squid is vulnerable to a denial of service attack when processing HTTP Digest Authentication credentials. Due to incorrect input validation the HTTP Request header parser for Digest authentication may access memory outside the allocated memory buffer. On systems with memory access protections this can result in the Squid process being terminated unexpectedly. Resulting in a denial of service for all clients using the proxy. CVE-2019-12529 Due to incorrect buffer management Squid is vulnerable to a denial of service attack when processing HTTP Basic Authentication credentials. Due to incorrect string termination the Basic authentication credentials decoder may access memory outside the decode buffer. On systems with memory access protections this can result in the Squid process being terminated unexpectedly. Resulting in a denial of service for all clients using the proxy.

Affected Software

Affected Software

'squid3' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 8 'Jessie', these problems have been fixed in version 3.4.8-6+deb8u8. We recommend that you upgrade your squid3 packages.

Common Vulnerabilities and Exposures (CVE)