CVE-2014-6053
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory…
Does this matter?
Lower severity and a low EPSS score (7.25%). Track it; it rarely justifies an emergency change on its own.
Description
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 7.25% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-19
- Affected
- libvncserver/libvncserver · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
- http://secunia.com/advisories/61506
- http://secunia.com/advisories/61682
- http://ubuntu.com/usn/usn-2365-1Third Party Advisory
- http://www.debian.org/security/2014/dsa-3081Third Party Advisory
- http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
- https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
- https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4573-1/
- https://usn.ubuntu.com/4587-1/
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
- http://secunia.com/advisories/61506
- http://secunia.com/advisories/61682
- http://ubuntu.com/usn/usn-2365-1Third Party Advisory
- http://www.debian.org/security/2014/dsa-3081Third Party Advisory
- http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
- https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
- https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4573-1/
- https://usn.ubuntu.com/4587-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.