Bug 2498264 (CVE-2026-54590)
| Summary: | CVE-2026-54590 AsyncSSH: AsyncSSH: Unauthorized file modification via authorized-keys directory escape | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | jmitchel, kshier, teagle |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in AsyncSSH, a Python package for implementing the SSHv2 protocol. An incomplete fix for a previous vulnerability allowed an attacker to bypass security restrictions in the AuthorizedKeysFile processing. By using specific characters like ~ or environment variables (${ENV}) in the AuthorizedKeysFile path, a remote attacker could escape the intended authorized-keys directory. This could lead to unauthorized modification of files outside the designated directory.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2498419, 2498421, 2498422, 2498423 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-07-08 21:02:53 UTC
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