Factory: Untrusted Search Path
CVE-2022-31253 is a high-severity untrusted search path vulnerability in Factory from openSUSE, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 2.6.3-404.1 as the first without the flaw, so updating Factory to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.35% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Factory to 2.6.3-404.1 or a later version.
- Update Openldap2 to 2.6.3-404.1 or a later version.
- Read the advisory on bugzilla.suse.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| openSUSE | Factory | openldap2 up to, but not including, 2.6.3-404.1 | 2.6.3-404.1 |
| openSUSE | Openldap2 | before 2.6.3-404.1 | 2.6.3-404.1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.1 | High | CNA (suse.de) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
A Untrusted Search Path vulnerability in openldap2 of openSUSE Factory allows local attackers with control of the ldap user or group to change ownership of arbitrary directory entries to this user/group, leading to escalation to root. This issue affects: openSUSE Factory openldap2 versions prior to 2.6.3-404.1.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Untrusted Search Path
The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.
How developers prevent this class of flaw
- Hard-code the search path to a set of known-safe values (such as system directories), or only allow them to be specified by the administrator in a configuration file. Do not allow these settings to be modified by an external party. Be careful to avoid related weaknesses such as CWE-426 and CWE-428.
- When invoking other programs, specify those programs using fully-qualified pathnames. While this is an effective approach, code that uses fully-qualified pathnames might not be portable to other systems that do not use the same pathnames. The portability can be improved by locating the full-qualified paths in a centralized, easily-modifiable location within the source code, and having the code refer to these paths.
- Remove or restrict all environment settings before invoking other programs. This includes the PATH environment variable, LD_LIBRARY_PATH, and other settings that identify the location of code libraries, and any application-specific search paths.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- bugzilla.suse.com/show_bug.cgi?id=1202931Exploit, Issue Tracking
Other vulnerabilities in Factory
- 7.8 High severity
- 7.8 High severity
Recent Untrusted Search Path vulnerabilities
- 9.8 Critical severity
- 8.8 High severity
- 7.8 High severity
- 7.8 High severity
- 7.3 High severity
- 7.2 High severity
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