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Debian LTS: Security Advisory for x11vnc (DLA-2490-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

6.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

1 year ago

Modified

Modified

1 year ago

Summary

The remote host is missing an update for the 'x11vnc' package(s) announced via the DLA-2490-1 advisory.

Insight

Insight

Guenal Davalan reported a flaw in x11vnc, a VNC server to allow remote access to an existing X session. x11vnc creates shared memory segments with 0777 mode. A local attacker can take advantage of this flaw for information disclosure, denial of service or interfering with the VNC session of another user on the host.

Affected Software

Affected Software

'x11vnc' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 9 stretch, this problem has been fixed in version 0.9.13-2+deb9u2. We recommend that you upgrade your x11vnc packages.

Common Vulnerabilities and Exposures (CVE)