CVE-2020-21047
Published: 22 August 2023
The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
elfutils Launchpad, Ubuntu, Debian |
bionic |
Released
(0.170-0.4ubuntu0.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(0.176-1.1ubuntu0.1)
|
|
| jammy |
Not vulnerable
(0.186-1build1)
|
|
| lunar |
Not vulnerable
(0.188-2.1)
|
|
| trusty |
Released
(0.158-0ubuntu5.3+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(0.178)
|
|
| xenial |
Released
(0.165-3ubuntu1.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=99dc63b10b3878616b85df2dfd2e4e7103e414b8 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |