Buffer overflow in Openssl
CVE-2016-0799
The fmtstr function in crypto/bio/b_print.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g improperly calculates string lengths, which allows remote attackers to cause a denial of service (overflow and out-of-bounds read) or possib…
Vulnerability class: Buffer Overflow
EPSS: 0.435 (97.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Openssl — versions 1.0.1, 1.0.1a, 1.0.1b
- Pulsesecure Client
- Pulsesecure Steel_belted_radius
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com
- 83755 (vdb-entry)
- FEDORA-2016-2802690366 (vendor-advisory)
- secalert@redhat.com
- secalert@redhat.com
- RHSA-2016:2073 (vendor-advisory)
- FEDORA-2016-e6807b3394 (vendor-advisory)
- secalert@redhat.com
- HPSBMU03575 (vendor-advisory)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2016-0799?
- CVE-2016-0799 is a critical-severity vulnerability in Openssl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2016-03-03.
- How severe is CVE-2016-0799?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2016-0799 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.