CVE-2021-46705 json
grub2-once uses fixed file name in /var/tmp
published 2022-03-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33363
- cvss
- 5.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.
Patch / fix
- SUSE SUSE Linux Enterprise Server 15 SP4 2.06-150400.7.1
- SUSE openSUSE Factory 2.06-18.1
- grub2 openSUSE Tumbleweed 2.06-18.1
opensuse advisories openSUSE-SU-2024:11926-1
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1190474 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| NVD | 3.1 | 4.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- SUSE SUSE Linux Enterprise Server 15 SP4
- SUSE openSUSE Factory
Classification
- Weakness
-
- CWE-377 DEPRECATED: Insecure Temporary File
References
-
bugzilla.suse.com
/show_bug.cgi?id=1190474
exploit, issue-tracking, vendor-advisory
Sources
- CVE List CVE-2021-46705
- NVD CVE-2021-46705
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.