Debian Security Advisory
DLA-1568-1 curl -- LTS security update
- Date Reported:
- 06 Nov 2018
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 848958, Bug 837945, Bug 836918.
In Mitre's CVE dictionary: CVE-2016-7141, CVE-2016-7167, CVE-2016-9586, CVE-2018-16839, CVE-2018-16842.
- More information:
Several vulnerabilities were discovered in cURL, an URL transfer library.
When built with NSS and the libnsspem.so library is available at runtime, allows an remote attacker to hijack the authentication of a TLS connection by leveraging reuse of a previously loaded client certificate from file for a connection for which no certificate has been set, a different vulnerability than CVE-2016-5420.
Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow.
Curl is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any applications that accept a format string from the outside without necessary input filtering, it could allow remote attacks.
Curl is vulnerable to a buffer overrun in the SASL authentication code that may lead to denial of service.
Curl is vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.
For Debian 8
Jessie, these problems have been fixed in version 7.38.0-4+deb8u13.
We recommend that you upgrade your curl 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