The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts…

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.

Scores

EPSS (exploitation in 30 days)

7.3% · top 5.6% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a
• CWE-19 (opens in a new tab)All about CWE-19 and its CVEs

Affected products

• n/a

  • affected n/a

References (15)

• http://www.ocert.org/advisories/ocert-2014-007.html (opens in a new tab)x_refsource_MISCx_transferred
• https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 61682 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• openSUSE-SU-2015:2207 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 61506 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• [oss-security] 20140925 [oCERT-2014-007] libvncserver multiple issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [oss-security] 20140923 Multiple issues in libVNCserver (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• USN-2365-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• GLSA-201507-07 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• DSA-3081 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• [debian-lts-announce] 20191030 [SECURITY] [DLA 1979-1] italc security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [debian-lts-announce] 20191129 [SECURITY] [DLA 2014-1] vino security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [debian-lts-announce] 20191221 [SECURITY] [DLA 2045-1] tightvnc security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• USN-4573-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-4587-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2014-6053](https://trackcve.app/badge/CVE-2014-6053.svg)](https://trackcve.app/cve/CVE-2014-6053)

Record last updated 6 Aug 2024, 12:03 UTC.