CVE-2017-5581

moderate-risk
Published 2017-02-28

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.

Do I need to act?

~
3.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 18c020124ff1b2441f714da2017f63dba50720ba, 6172cc01dd7d1493064571b341c978e2df7725d7
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Tigervnc

References (18)

http://rhn.redhat.com/errata/RHSA-2017-0630.html
Mailing List http://www.openwall.com/lists/oss-security/2017/01/22/1
Mailing List http://www.openwall.com/lists/oss-security/2017/01/25/6
Third Party Advisory http://www.securityfocus.com/bid/95789
https://access.redhat.com/errata/RHSA-2017:2000
Patch https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba507...
Patch https://github.com/TigerVNC/tigervnc/pull/399
Release Notes https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1
https://security.gentoo.org/glsa/201702-19
http://rhn.redhat.com/errata/RHSA-2017-0630.html
Mailing List http://www.openwall.com/lists/oss-security/2017/01/22/1
Mailing List http://www.openwall.com/lists/oss-security/2017/01/25/6
Third Party Advisory http://www.securityfocus.com/bid/95789
https://access.redhat.com/errata/RHSA-2017:2000
Patch https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba507...
Patch https://github.com/TigerVNC/tigervnc/pull/399
Release Notes https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1
https://security.gentoo.org/glsa/201702-19
43
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 6/34 · Minimal
Exposure 5/34 · Minimal