Improper Input Validation Affecting openssl package, versions <1.1.0e-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN9-OPENSSL-375002
- published4 May 2017
- disclosed4 May 2017
Introduced: 4 May 2017
CVE-2017-3733 (opens in a new tab)How to fix?
Upgrade Debian:9 openssl to version 1.1.0e-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
References
- https://security-tracker.debian.org/tracker/CVE-2017-3733
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us
- https://github.com/openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2
- https://www.openssl.org/news/secadv/20170216.txt
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- http://www.securityfocus.com/bid/96269
- http://www.securitytracker.com/id/1037846