Vulnerability Details : CVE-2017-7393
In TigerVNC 1.7.1 (VNCSConnectionST.cxx VNCSConnectionST::fence), an authenticated client can cause a double free, leading to denial of service or potentially code execution.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2017-7393
- cpe:2.3:a:tigervnc:tigervnc:1.7.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7393
1.52%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7393
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2017-7393
-
The product calls free() twice on the same memory address.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7393
-
http://www.securityfocus.com/bid/97305
TigerVNC Multiple Security Vulnerabilities
-
https://security.gentoo.org/glsa/201801-13
TigerVNC: Multiple vulnerabilities (GLSA 201801-13) — Gentoo security
-
https://access.redhat.com/errata/RHSA-2017:2000
RHSA-2017:2000 - Security Advisory - Red Hat Customer Portal
-
https://github.com/TigerVNC/tigervnc/pull/438
Prevent double free by crafted fences. by michalsrb · Pull Request #438 · TigerVNC/tigervnc · GitHubIssue Tracking;Patch;Third Party Advisory
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