Integer overflow in shadow 4.2.1 allows local users to gain privileges via crafted input to newuidmap.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/07/19/7 | third party advisory mailing list |
| http://www.securityfocus.com/bid/92055 | third party advisory vdb entry |
| https://security.gentoo.org/glsa/201706-02 | vendor advisory |
| https://github.com/shadow-maint/shadow/issues/27 | patch third party advisory issue tracking |
| https://bugzilla.suse.com/show_bug.cgi?id=979282 | patch issue tracking |
| http://www.openwall.com/lists/oss-security/2016/07/25/7 | patch mailing list third party advisory |
| http://www.openwall.com/lists/oss-security/2016/07/19/6 | third party advisory mailing list |
| http://www.openwall.com/lists/oss-security/2016/07/20/2 | third party advisory mailing list |
| http://www.debian.org/security/2017/dsa-3793 | vendor advisory |