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Unscored Public exploit CVE-2017-3730 EUVD-2017-12847GHSA-rq64-8m54-26j4

Bad (EC)DHE parameters cause a client crash

Published May 4, 2017 · Updated Sep 16, 2024 · Assigned by openssl

Vendor: OpenSSL Product: OpenSSL Package: openssl Ecosystem: Debian

Description

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.

Affected products

VendorProductAffectedFixed
OpenSSL OpenSSL openssl-1.1.0, openssl-1.1.0a, openssl-1.1.0b, openssl-1.1.0c —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 openssl 1.1.0d-1 —
Debian 13 openssl 1.1.0d-1 —
Debian 12 openssl 1.1.0d-1 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References