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.

Package        : squid3
Version        : 3.4.8-6+deb8u8
CVE ID         : CVE-2019-12525 CVE-2019-12529


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.

For Debian 8 "Jessie", these problems have been fixed in version
3.4.8-6+deb8u8.

We recommend that you upgrade your squid3 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS