CVE-2019-12972
Description
An out-of-bounds read was discovered in Binutils while it processes a malformed ELF relocatable file (.o file). A victim user who uses Binutils tools (size, gdb, readelf) to analyze untrusted binaries, may be vulnerable to a denial of service attack.
Statement
Exploitation of this bug specifically requires the victim to analyze a maliciously crafted binary using a tool that uses a vulnerable version of libbfd. No binary under normal circumstances, omits the '\0' in SHT_GROUP, that is a prerequisite for this attack to work.
It is neither common practice, nor recommended to analyze untrusted binaries outside a sandbox. Therefore RH ProdSec has set the Impact of this bug to "Low".
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 | 5.5 | 5.5 | N/A |
| Attack Vector | Local | Local | 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 | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | High | High | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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