CVE-2022-1271
Published: 7 April 2022
An arbitrary file write vulnerability was found in GNU gzip's zgrep utility. When zgrep is applied on the attacker's chosen file name (for example, a crafted file name), this can overwrite an attacker's content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system.
Priority
Status
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://www.openwall.com/lists/oss-security/2022/04/07/8
- https://lists.gnu.org/r/bug-gzip/2022-04/msg00011.html
- https://ubuntu.com/security/notices/USN-5378-1
- https://ubuntu.com/security/notices/USN-5378-2
- https://ubuntu.com/security/notices/USN-5378-3
- https://ubuntu.com/security/notices/USN-5378-4
- https://www.cve.org/CVERecord?id=CVE-2022-1271
- NVD
- Launchpad
- Debian