Buffer overflow in Openssl
CVE-2017-3735
While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread. This would result in an incorrect text display of the certificate. This bug has been present since 2006 and is present in all versions of OpenSSL before 1.0.2m and 1.1.0g.
Vulnerability class: Buffer Overflow
EPSS: 0.177 (96.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Openssl — versions 0.9.7j, 0.9.7k, 0.9.7l
- Openssl Software Foundation — versions 1.0.2, 1.1.0
- Debian Debian_linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- openssl-security@openssl.org (VDB Entry, Third Party Advisory, vdb-entry)
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (vendor-advisory, Third Party Advisory)
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (mailing-list)
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (vendor-advisory, Third Party Advisory)
- openssl-security@openssl.org (vendor-advisory)
- openssl-security@openssl.org (VDB Entry, Third Party Advisory, vdb-entry)
- openssl-security@openssl.org (vendor-advisory)
Frequently asked questions
- What is CVE-2017-3735?
- CVE-2017-3735 is a medium-severity vulnerability in Openssl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2017-08-28.
- How severe is CVE-2017-3735?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2017-3735 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.