There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 4bpp data.
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 |
|---|---|
| https://usn.ubuntu.com/3860-2/ | third party advisory vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1652621 | patch exploit third party advisory issue tracking |
| https://usn.ubuntu.com/3860-1/ | third party advisory vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.html | vendor advisory mailing list third party advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WFGYICNTMNDNMDDUV4G2RYFB5HNJCOV/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PC7EGOEQ5C4OD66ZUJJIIYEXBTZOCMZX/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZSBCRN6EGQJUVOSD4OEEQ6XORHEM2CUL/ | vendor advisory |
| https://github.com/cacalabs/libcaca/issues/37 | third party advisory exploit |
| https://github.com/cacalabs/libcaca/commit/3e52dabe3e64dc50f4422effe364a1457a8a8592 | third party advisory patch |