CVE-2016-6252
HighSummary
Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.
Risk Assessment
This vulnerability may lead to privilege escalation, posing a serious security risk to the system.
Recommendation
It is recommended to update to the latest version of shadow to mitigate this vulnerability.
Other vulnerabilities in shadow 4.2.1
See all- CVE-2017-12424Critical
In the newusers tool in shadow before version 4.5, there is a possibility to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors.
- CVE-2023-29383Low
In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \r manipulations and Unicode characters to work around blocking of the ':' character make it possible to give the impression that a new user has been added.
- CVE-2013-4235Medium
shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees.
Original NVD description (English source)
Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS