medium
4.3
CWE
399
Advisory Published
Updated

CVE-2015-1788

First published: Thu Jun 11 2015(Updated: )

The BN_GF2m_mod_inv function in crypto/bn/bn_gf2m.c in OpenSSL before 0.9.8s, 1.0.0 before 1.0.0e, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b does not properly handle ECParameters structures in which the curve is over a malformed binary polynomial field, which allows remote attackers to cause a denial of service (infinite loop) via a session that uses an Elliptic Curve algorithm, as demonstrated by an attack against a server that supports client authentication.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.1-4ubuntu5.31
1.0.1-4ubuntu5.31
ubuntu/openssl<1.0.1
1.0.1
ubuntu/openssl<1.0.1
1.0.1
ubuntu/openssl<1.0.1
1.0.1
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
ubuntu/openssl<1.0.2
1.0.2
debian/openssl
1.1.1w-0+deb11u1
1.1.1n-0+deb11u5
3.0.14-1~deb12u1
3.0.14-1~deb12u2
3.3.2-1
OpenSSL libcrypto<=0.9.8zf
OpenSSL libcrypto=1.0.0
OpenSSL libcrypto=1.0.0-beta1
OpenSSL libcrypto=1.0.0-beta2
OpenSSL libcrypto=1.0.0-beta3
OpenSSL libcrypto=1.0.0-beta4
OpenSSL libcrypto=1.0.0-beta5
OpenSSL libcrypto=1.0.0a
OpenSSL libcrypto=1.0.0b
OpenSSL libcrypto=1.0.0c
OpenSSL libcrypto=1.0.0d
OpenSSL libcrypto=1.0.0e
OpenSSL libcrypto=1.0.0f
OpenSSL libcrypto=1.0.0g
OpenSSL libcrypto=1.0.0h
OpenSSL libcrypto=1.0.0i
OpenSSL libcrypto=1.0.0j
OpenSSL libcrypto=1.0.0k
OpenSSL libcrypto=1.0.0l
OpenSSL libcrypto=1.0.0m
OpenSSL libcrypto=1.0.0n
OpenSSL libcrypto=1.0.0o
OpenSSL libcrypto=1.0.0p
OpenSSL libcrypto=1.0.0q
OpenSSL libcrypto=1.0.0r
OpenSSL libcrypto=1.0.1
OpenSSL libcrypto=1.0.1-beta1
OpenSSL libcrypto=1.0.1-beta2
OpenSSL libcrypto=1.0.1-beta3
OpenSSL libcrypto=1.0.1a
OpenSSL libcrypto=1.0.1b
OpenSSL libcrypto=1.0.1c
OpenSSL libcrypto=1.0.1d
OpenSSL libcrypto=1.0.1e
OpenSSL libcrypto=1.0.1f
OpenSSL libcrypto=1.0.1g
OpenSSL libcrypto=1.0.1h
OpenSSL libcrypto=1.0.1i
OpenSSL libcrypto=1.0.1j
OpenSSL libcrypto=1.0.1k
OpenSSL libcrypto=1.0.1l
OpenSSL libcrypto=1.0.1m
OpenSSL libcrypto=1.0.2
OpenSSL libcrypto=1.0.2-beta1
OpenSSL libcrypto=1.0.2a

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2015-1788?

    CVE-2015-1788 is rated as medium severity due to its potential ability to cause denial of service.

  • How do I fix CVE-2015-1788?

    To fix CVE-2015-1788, upgrade OpenSSL to version 1.0.2 or later.

  • Which OpenSSL versions are affected by CVE-2015-1788?

    OpenSSL versions prior to 0.9.8s, 1.0.0e, 1.0.1n, and 1.0.2b are affected by CVE-2015-1788.

  • Can CVE-2015-1788 be exploited remotely?

    Yes, CVE-2015-1788 can be exploited remotely, allowing attackers to potentially cause a denial of service.

  • What systems are vulnerable to CVE-2015-1788?

    Various systems using vulnerable versions of OpenSSL, particularly older Ubuntu and Debian distributions, are at risk from CVE-2015-1788.

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