NULL Pointer Dereference Affecting openssl package, versions <1.1.0d-1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-DEBIANUNSTABLE-OPENSSL-374946
- published4 May 2017
- disclosed4 May 2017
Introduced: 4 May 2017
CVE-2017-3730 (opens in a new tab)How to fix?
Upgrade Debian:unstable openssl to version 1.1.0d-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:unstable relevant fixed versions and status.
In OpenSSL 1.1.0 before 1.1.0d, if a malicious server supplies bad parameters for a DHE or ECDHE key exchange then this can result in the client attempting to dereference a NULL pointer leading to a client crash. This could be exploited in a Denial of Service attack.
References
- https://security-tracker.debian.org/tracker/CVE-2017-3730
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03838en_us
- https://www.exploit-db.com/exploits/41192/
- https://security.gentoo.org/glsa/201702-07
- https://github.com/openssl/openssl/commit/efbe126e3ebb9123ac9d058aa2bb044261342aaa
- https://www.openssl.org/news/secadv/20170126.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/95812
- http://www.securitytracker.com/id/1037717
- https://www.exploit-db.com/exploits/41192