Strix
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CVE-2015-1788

UnknownEPSS 23.22%

Last modified

CVE-2015-1788 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 23.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
23.22%

97.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpensslOpenssl<= 0.9.8zf
OpensslOpenssl1.0.0
OpensslOpenssl1.0.0a
OpensslOpenssl1.0.0b
OpensslOpenssl1.0.0c
OpensslOpenssl1.0.0d
OpensslOpenssl1.0.0e
OpensslOpenssl1.0.0f
OpensslOpenssl1.0.0g
OpensslOpenssl1.0.0h
OpensslOpenssl1.0.0i
OpensslOpenssl1.0.0j
OpensslOpenssl1.0.0k
OpensslOpenssl1.0.0l
OpensslOpenssl1.0.0m
OpensslOpenssl1.0.0n
OpensslOpenssl1.0.0o
OpensslOpenssl1.0.0p
OpensslOpenssl1.0.0q
OpensslOpenssl1.0.0r
OpensslOpenssl1.0.1
OpensslOpenssl1.0.1a
OpensslOpenssl1.0.1b
OpensslOpenssl1.0.1c
OpensslOpenssl1.0.1d
OpensslOpenssl1.0.1e
OpensslOpenssl1.0.1f
OpensslOpenssl1.0.1g
OpensslOpenssl1.0.1h
OpensslOpenssl1.0.1i
OpensslOpenssl1.0.1j
OpensslOpenssl1.0.1k
OpensslOpenssl1.0.1l
OpensslOpenssl1.0.1m
OpensslOpenssl1.0.2
OpensslOpenssl1.0.2a

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-1788?
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.
How severe is CVE-2015-1788?
Severity scoring for CVE-2015-1788 is pending analysis. The EPSS model estimates a 23.22% probability of exploitation in the next 30 days.
How do I fix CVE-2015-1788?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-1788?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST