CVE-2014-0011

tigervnc: ZRLE decoding heap-based buffer overflow in vncviewer

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Severity

Moderate

Red Hat Product Security

5.1

CVSS 2.0

Review impact separately from score.

Published · March 19, 2014

Updated · November 22, 2025

Description

Multiple heap-based buffer overflows in the ZRLE_DECODE function in common/rfb/zrleDecode.h in TigerVNC before 1.3.1, when NDEBUG is enabled, allow remote VNC servers to cause a denial of service (vncviewer crash) and possibly execute arbitrary code via vectors related to screen image rendering.

Statement

Not vulnerable. This issue did not affect the tigervnc packages as shipped with Red Hat Enterprise Linux 6, and the vnc packages as shipped with Red Hat Enterprise Linux 5.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 5.1
AV:N/AC:H/Au:N/C:P/I:P/A:P

CWE-122 · Heap-based Buffer Overflow