NULL Pointer Dereference Affecting openssl package, versions <1.1.0d-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

Exploit Maturity
Mature
EPSS
95.2% (100th percentile)

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  • Snyk IDSNYK-DEBIAN9-OPENSSL-374944
  • published4 May 2017
  • disclosed4 May 2017

Introduced: 4 May 2017

CVE-2017-3730  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:9 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:9 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.