VulnerabilityModified
CVE-2017-5581
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.
CRITICAL 9.8EPSS 4.25%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.25% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- tigervnc/tigervnc
- Source
- cve@mitre.org
References
- http://rhn.redhat.com/errata/RHSA-2017-0630.html
- http://www.openwall.com/lists/oss-security/2017/01/22/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/25/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/95789Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2000
- https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720baPatch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/pull/399Patch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/201702-19
- http://rhn.redhat.com/errata/RHSA-2017-0630.html
- http://www.openwall.com/lists/oss-security/2017/01/22/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/01/25/6Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/95789Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:2000
- https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720baPatch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/pull/399Patch, Third Party Advisory
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.7.1Release Notes, Third Party Advisory
- https://security.gentoo.org/glsa/201702-19
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.