CVE-2017-5885 — Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_

Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_color_map_set functions in gtk-vnc before 0.7.0 allow remote servers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving SetColorMapEntries, which triggers a

01What is this vulnerability?

Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_color_map_set functions in gtk-vnc before 0.7.0 allow remote servers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving SetColorMapEntries, which triggers a buffer overflow.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-02-28T18:59:00.453
• Last modified: 2026-05-13T00:24:29.033

09References

• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/03/5
• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/05/5
• www.securityfocus.com — http://www.securityfocus.com/bid/96016
• access.redhat.com — https://access.redhat.com/errata/RHSA-2017:2258
• bugzilla.gnome.org — https://bugzilla.gnome.org/show_bug.cgi?id=778050
• git.gnome.org — https://git.gnome.org/browse/gtk-vnc/commit/?id=c8583fd3783c5b811590fcb7bae4ce6e…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/03/5
• www.openwall.com — http://www.openwall.com/lists/oss-security/2017/02/05/5
• www.securityfocus.com — http://www.securityfocus.com/bid/96016