Vulnerability in Open-Xchange Appsuite Backend
CVE-2023-26451
Functions with insufficient randomness were used to generate authorization tokens of the integrated oAuth Authorization Service. Authorization codes were predictable for third parties and could be used to intercept and take over the client authorization process. As a result, other users accounts could be compromised. The oAuth Authorization Service is not enabled by default. We have updated the implementation to use sources with sufficient randomness to generate authorization tokens. No publicly available exploits are known.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release… (release-notes, Release Notes)
- documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-… (vendor-advisory)
- seclists.org/fulldisclosure/2023/Aug/8 (Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-26451?
- CVE-2023-26451 is a high-severity vulnerability in Open-Xchange Appsuite Backend, classified under Use of Insufficiently Random Values. CVSS score: 7.5/10. Published 2023-08-02.
- How severe is CVE-2023-26451?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-26451 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.