Debian 9: DSA-4331-1 Critical: Curl Buffer Overflow Threat

CVE-2018-16839

Harry Sintonen discovered that, on systems with a 32 bit size_t, an
integer overflow would be triggered when a SASL user name longer
than 2GB is used. This would in turn cause a very small buffer to be
allocated instead of the intended very huge one, which would trigger
a heap buffer overflow when the buffer is used.

CVE-2018-16842

Brian Carpenter discovered that the logic in the curl tool to wrap
error messages at 80 columns is flawed, leading to a read buffer
overflow if a single word in the message is itself longer than 80
bytes.

For the stable distribution (stretch), these problems have been fixed in
version 7.52.1-5+deb9u8.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/curl

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions...