Vulnerability Details : CVE-2018-7731
Potential exploit
An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.
Vulnerability category: Memory Corruption
Products affected by CVE-2018-7731
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
- cpe:2.3:a:exempi_project:exempi:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-7731
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-7731
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-7731
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-7731
-
https://usn.ubuntu.com/3668-1/
USN-3668-1: Exempi vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
[SECURITY] Fedora 33 Update: python-msldap-0.3.15-1.fc33 - package-announce - Fedora Mailing-Lists
-
https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666
exempi - Exempi 2.0. XMP metadata handling library based on Adobe XMP reference implementation. (mirrored from https://gitlab.freedesktop.org/libopenraw/exempi)Patch;Third Party Advisory
-
https://bugs.freedesktop.org/show_bug.cgi?id=105247
105247 – (CVE-2018-7731) NULL pointer dereference in WEBP::VP8XChunk::VP8XChunk() of exempi 2.4.4Exploit;Issue Tracking;Third Party Advisory
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