Overview
- Description
- A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.
- Source
- secalert@redhat.com
- NVD status
- Awaiting Analysis
Risk scores
CVSS 3.1
- Type
- Secondary
- Base score
- 7
- Impact score
- 4.7
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
- Severity
- HIGH
Weaknesses
- secalert@redhat.com
- CWE-364
Social media
- Hype score
- Not currently trending