Omaha: Improper Handling of Parameters
CVE-2023-7261 is a high-severity improper handling of parameters vulnerability in Omaha from Google, 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 unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists versions 1.3.36.271, 1.3.36.351 as the first without the flaw, so updating Omaha to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.16% 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 Omaha to 1.3.36.271 or 1.3.36.351, whichever matches your release line, or a later version.
- Update Updater to 1.3.36.351 or a later version.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Omaha | 1.3.36.271 up to, but not including, 1.3.36.271; before 1.3.36.351 | 1.3.36.271, 1.3.36.351 | |
| Updater | before 1.3.36.351 | 1.3.36.351 |
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
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- 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:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.8 | High | NVD |
| CVSS 3.1 | 7.3 | High | CISA (ADP) |
Official description
Inappropriate implementation in Google Updator prior to 1.3.36.351 in Google Chrome allowed a local attacker to perform privilege escalation via a malicious file. (Chromium security severity: High)
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Handling of Parameters
The product does not properly handle when the expected number of parameters, fields, or arguments is not provided in input, or if those parameters are undefined.
More Improper Handling of Parameters vulnerabilities (CWE-233)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- issues.chromium.org/issues/40064602Exploit, Issue Tracking
Other vulnerabilities in Omaha
- 7.8 High severity
Recent Improper Handling of Parameters vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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