libvncserver: server NULL pointer dereference flaw in ClientCutText message handling
Published Dec 15, 2014
5.0
MEDIUMCVSS 2.0
EPSS 7.25%
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.
Affected products
No data.
Configuration 1
- ≤ 0.9.9
Configuration 2
- 12.04
- 14.04
Configuration 3
- 7.0
No data.
Red Hat Enterprise Linux 6
libvncserver-0:0.9.7-7.el6_6.1
Fixed · RHSA-2014:1826
Red Hat Enterprise Linux 7
kdenetwork-7:4.10.5-8.el7_0
Fixed · RHSA-2014:1827
Red Hat Enterprise Linux 7
libvncserver-0:0.9.9-9.el7_0.1
Fixed · RHSA-2014:1826
Red Hat Enterprise Linux 5
kdenetwork
Will not fix
Red Hat Enterprise Linux 6
kdenetwork
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libvncserver-0:0.9.7-7.el6_6.1 | Fixed | RHSA-2014:1826 |
| Red Hat Enterprise Linux 7 | kdenetwork-7:4.10.5-8.el7_0 | Fixed | RHSA-2014:1827 |
| Red Hat Enterprise Linux 7 | libvncserver-0:0.9.9-9.el7_0.1 | Fixed | RHSA-2014:1826 |
| Red Hat Enterprise Linux 5 | kdenetwork | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | kdenetwork | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
References (19)
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html vendor-advisoryx_refsource_SUSE
- http://seclists.org/oss-sec/2014/q3/639 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://secunia.com/advisories/61506 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/61682 third-party-advisoryx_refsource_SECUNIA
- http://ubuntu.com/usn/usn-2365-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.debian.org/security/2014/dsa-3081 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.ocert.org/advisories/ocert-2014-007.html x_refsource_MISCThird Party AdvisoryUS Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-6053 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1144289 Issue Tracking
- https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28 x_refsource_CONFIRMIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html mailing-listx_refsource_MLIST
- https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2014-6053
- https://security.gentoo.org/glsa/201507-07 vendor-advisoryx_refsource_GENTOO
- https://usn.ubuntu.com/4573-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4587-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2014-6053
Change history (0)
No recorded changes yet.