CVE-2016-2179

UnknownEPSS 26.56%

Last modified

CVE-2016-2179 is a vulnerability of currently unknown severity. The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.. EPSS estimates a 26.56% chance of exploitation in the next 30 days.

Description

The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.

Metrics

EPSS Probability
26.56%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
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
OpensslOpenssl1.0.1n
OpensslOpenssl1.0.1o
OpensslOpenssl1.0.1p
OpensslOpenssl1.0.1q
OpensslOpenssl1.0.1r
OpensslOpenssl1.0.1s
OpensslOpenssl1.0.1t
OpensslOpenssl1.0.2
OpensslOpenssl1.0.2a
OpensslOpenssl1.0.2b
OpensslOpenssl1.0.2c
OpensslOpenssl1.0.2d
OpensslOpenssl1.0.2e
OpensslOpenssl1.0.2f
OpensslOpenssl1.0.2g
OpensslOpenssl1.0.2h
OracleLinux6
OracleLinux7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-2179?
The DTLS implementation in OpenSSL before 1.1.0 does not properly restrict the lifetime of queue entries associated with unused out-of-order messages, which allows remote attackers to cause a denial of service (memory consumption) by maintaining many crafted DTLS sessions simultaneously, related to d1_lib.c, statem_dtls.c, statem_lib.c, and statem_srvr.c.
How severe is CVE-2016-2179?
Severity scoring for CVE-2016-2179 is pending analysis. The EPSS model estimates a 26.56% probability of exploitation in the next 30 days.
How do I fix CVE-2016-2179?
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-2016-2179?

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

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Source: NVD / NIST