Double Free in NetApp 500f
CVE-2023-25136
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.897 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.897 · newest: 0.897 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/017_sshd.patch.sig (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2023/02/02/2 (Exploit, Mailing List, Third Party Advisory)
- bugzilla.mindrot.org/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- github.com/openssh/openssh-portable/commit/486c4dc3b83b4b67d663fb0fa62bc24138ec… (Patch, Third Party Advisory)
- jfrog.com/blog/openssh-pre-auth-double-free-cve-2023-25136-writeup-and-proof-of… (Exploit, Third Party Advisory)
- news.ycombinator.com/item (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2023/02/13/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2023/02/22/1 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2023/02/22/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2023/02/23/3 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-25136?
- CVE-2023-25136 is a medium-severity vulnerability in NetApp 500f, classified under Double Free. CVSS score: 6.5/10. Published 2023-02-03.
- How severe is CVE-2023-25136?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-25136 known to be exploited?
- 35 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.