CVE-2017-3731

high-risk
Published 2017-05-04

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

Do I need to act?

!
12.6% chance of exploitation in next 30 days
EPSS score — higher than 87% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (18)

Affected Vendors

Nodejs Openssl

References (40)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0286.html
Third Party Advisory http://www.debian.org/security/2017/dsa-3773
Patch http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
Patch http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
Patch http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
Third Party Advisory http://www.securityfocus.com/bid/95813
Third Party Advisory http://www.securitytracker.com/id/1037717
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2185
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2186
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2187
Third Party Advisory https://github.com/openssl/openssl/commit/00d965474b22b54e4275232bc71ee0c699c5cd...
Third Party Advisory https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.asc
Third Party Advisory https://security.gentoo.org/glsa/201702-07
Third Party Advisory https://security.netapp.com/advisory/ntap-20171019-0002/
Third Party Advisory https://security.paloaltonetworks.com/CVE-2017-3731
Third Party Advisory https://source.android.com/security/bulletin/pixel/2017-11-01
Third Party Advisory https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpe...
Vendor Advisory https://www.openssl.org/news/secadv/20170126.txt
Patch https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Third Party Advisory https://www.tenable.com/security/tns-2017-04
and 20 more references
57
/ 100
high-risk
Severity 26/34 · High
Exploitability 12/34 · Low
Exposure 19/34 · Moderate