CVE-2022-0336: fedoraproject fedora Incorrect Default Permissions
Vulnerability summary
CVE-2022-0336 is a high (CVSS 8.8) Incorrect Default Permissions vulnerability in fedoraproject fedora. EPSS estimates a 1.75% chance of exploitation in the next 30 days, higher than 77.9% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 5Timeline
- 29-08-2022PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · AlpineEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.75%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
Increase +0.11 pp
From 1.65% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Alpine1 product
- samba≥ 4.0.0, < 4.15.12-r0
Debian1 product
- samba< 2:4.16.0+dfsg-2
Fedoraproject1 product
- fedoraEOL34 | 35
Samba1 product
- samba≥ 4.0.0, < 4.13.17 | ≥ 4.14.0, < 4.14.12 | ≥ 4.15.0, < 4.15.4
Ubuntu1 product
- samba< 2:4.13.17~dfsg-0ubuntu0.21.04.1
5 vendors · 5 products
References
13 links- github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3cPatchThird Party Advisory
- github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400PatchThird Party Advisory
- security.gentoo.org/glsa/202309-06Vendor Advisory
