CVE-2019-15691 — Expired Pointer Dereference in Tigervnc
Severity
7.2HIGHNVD
EPSS
3.7%
top 12.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 26
Latest updateMay 24
Description
TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 1.2 | Impact: 5.9
Affected Packages5 packages
Patches
🔴Vulnerability Details
2📋Vendor Advisories
2💬Community
3Bugzilla▶
CVE-2019-15691 tigervnc: Stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder↗2020-01-10
Bugzilla▶
CVE-2019-15691 tigervnc: stack use-after-return due to incorrect usage of stack memory in ZRLEDecoder [fedora-all]↗2020-01-10
Bugzilla▶
CVE-2017-15691 uima: XML external entity expansion (XXE) can allow attackers to execute arbitrary code↗2018-04-27