The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-11490 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue did not affect the versions of giflib as shipped with Red Hat Enterprise Linux 5, 6, an 7.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 3.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 7.0 Operational Tools for RHEL 7 | phantomjs | Not affected |
| Red Hat Enterprise Linux 7 | giflib | Not affected |
| Red Hat Enterprise Linux 6 | giflib | Not affected |
| Red Hat Enterprise Linux 5 | giflib | Not affected |
Vulmon