CVE-2016-10011
CVE-2016-10011 is a medium-severity vulnerability in Openbsd Openssh with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-320.
Key facts
- Severity: Medium (CVSS 3.x base score 6.2)
- CVSS v2: 2.1
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-320
- Affected product: Openbsd Openssh
- Published:
- Last modified:
Description
authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.
Frequently asked questions
- What is CVE-2016-10011?
- authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.
- How severe is CVE-2016-10011?
- CVE-2016-10011 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2016-10011 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-10011?
- CVE-2016-10011 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2016-10011?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2016-10011 published?
- CVE-2016-10011 was published on 2017-01-05 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2016/12/19/2
- http://www.securityfocus.com/bid/94977
- http://www.securitytracker.com/id/1037490
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.647637
- https://access.redhat.com/errata/RHSA-2017:2029
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf
- https://github.com/openbsd/src/commit/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9
- https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- https://security.netapp.com/advisory/ntap-20171130-0002/
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03818en_us
- https://www.openssh.com/txt/release-7.4
Affected products (1)
- cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
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Threat intelligence
Threat-intel indicators referencing this CVE:
- 122.114.69.235 (ipv4-addr)
- 92.47.46.174 (ipv4-addr)
- 76.12.128.249 (ipv4-addr)
- 64.53.7.231 (ipv4-addr)
- 62.182.118.138 (ipv4-addr)
- 61.76.136.25 (ipv4-addr)
- 213.135.175.76 (ipv4-addr)
- 187.237.47.214 (ipv4-addr)