CVE-2017-3731
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 57.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 57.59% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- openssl/openssl · nodejs/node.js
- Source
- openssl-security@openssl.org
References
- http://rhn.redhat.com/errata/RHSA-2017-0286.htmlThird Party Advisory
- http://www.debian.org/security/2017/dsa-3773Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/95813Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037717Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2185Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2186Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2187Third Party Advisory
- https://github.com/openssl/openssl/commit/00d965474b22b54e4275232bc71ee0c699c5cd21Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-17:02.openssl.ascThird Party Advisory
- https://security.gentoo.org/glsa/201702-07Third Party Advisory
- https://security.netapp.com/advisory/ntap-20171019-0002/Third Party Advisory
- https://security.paloaltonetworks.com/CVE-2017-3731Third Party Advisory
- https://source.android.com/security/bulletin/pixel/2017-11-01Third Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_usThird Party Advisory
- https://www.openssl.org/news/secadv/20170126.txtVendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
- https://www.tenable.com/security/tns-2017-04Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0286.htmlThird Party Advisory
- http://www.debian.org/security/2017/dsa-3773Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlPatch, Third Party Advisory
- http://www.securityfocus.com/bid/95813Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037717Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2185Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2186Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2187Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.