CVE-2019-6128
Description
A vulnerability was found in LibTIFF, where a memory leak in the TIFFFdOpen function within tif_unix.c could lead to a denial of service, where a remote attacker could exploit this flaw by tricking a user into opening a specially crafted file, causing increased memory consumption and potential application instability over time.
Statement
This vulnerability is rated as moderate because a memory leak in LibTIFF’s TIFFFdOpen function within tif_unix.c could lead to a denial of service, exploitation requires user interaction, as an attacker must persuade a victim to open a specially crafted file. While this does not lead to code execution, repeated exploitation could impact application availability.
Mitigation
This bug could be mitigated by configuring process memory limits using cgroups.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | 8.8 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | Low | Low | N/A |
| Privileges Required | None | None | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | None | High | N/A |
| Integrity Impact | None | High | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Other
Technical Impact: Read Memory; Other
Be careful using vfork() and fork() in security sensitive code. The process state will not be cleaned up and will contain traces of data from past use.
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