Vulnerability in Kaspersky Tigervnc
CVE-2019-15691
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.047 (91.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.047 · newest: 0.047 · change: 0.000
Affected products
- Kaspersky Tigervnc — versions 1.10.0
- Tigervnc
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/CendioOssman/tigervnc/commit/d61a767d6842b530ffb532ddd5a3d233119aad40 (Patch, Third Party Advisory)
- github.com/TigerVNC/tigervnc/releases/tag/v1.10.1 (Third Party Advisory, Release Notes)
- www.openwall.com/lists/oss-security/2019/12/20/2 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00039.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-15691?
- CVE-2019-15691 is a high-severity vulnerability in Kaspersky Tigervnc, classified under CWE-825. CVSS score: 7.2/10. Published 2019-12-26.
- How severe is CVE-2019-15691?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2019-15691 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.