Debian Security Advisory
DSA-3793-1 shadow -- security update
- Date Reported:
- 24 Feb 2017
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 832170, Bug 855943.
In Mitre's CVE dictionary: CVE-2016-6252, CVE-2017-2616.
- More information:
Several vulnerabilities were discovered in the shadow suite. The Common Vulnerabilities and Exposures project identifies the following problems:
An integer overflow vulnerability was discovered, potentially allowing a local user to escalate privileges via crafted input to the newuidmap utility.
Tobias Stoeckmann discovered that su does not properly handle clearing a child PID. A local attacker can take advantage of this flaw to send SIGKILL to other processes with root privileges, resulting in denial of service.
For the stable distribution (jessie), these problems have been fixed in version 1:4.2-3+deb8u3.
We recommend that you upgrade your shadow packages.