Integer overflow in the strxfrm function in the GNU C Library (aka glibc or libc6) before 2.21 allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string, which triggers a stack-based buffer overflow.
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/2017/02/14/9 | patch mailing list third party advisory |
| http://www.securityfocus.com/bid/72602 | third party advisory vdb entry |
| https://sourceware.org/bugzilla/show_bug.cgi?id=16009 | patch issue tracking |
| https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=0f9e585480ed | |
| http://www.openwall.com/lists/oss-security/2015/02/13/3 | patch mailing list third party advisory |
| https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E | mailing list |
| https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E | mailing list |