Buffer overflow in the ModifiablePixelBuffer::fillRect function in TigerVNC before 1.7.1 allows remote servers to execute arbitrary code via an RRE message with subrectangle outside framebuffer boundaries.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2017/01/22/1 | mailing list third party advisory patch |
| http://rhn.redhat.com/errata/RHSA-2017-0630.html | vendor advisory |
| https://access.redhat.com/errata/RHSA-2017:2000 | vendor advisory |
| https://security.gentoo.org/glsa/201702-19 | vendor advisory |
| https://github.com/TigerVNC/tigervnc/pull/399 | third party advisory patch |
| https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720ba | third party advisory patch |
| https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1 | third party advisory release notes |
| http://www.openwall.com/lists/oss-security/2017/01/25/6 | mailing list third party advisory patch |
| http://www.securityfocus.com/bid/95789 | vdb entry third party advisory |