CVE-2020-12872

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

yaws_config.erl in Yaws through 2.0.2 and/or 2.0.7 loads obsolete TLS ciphers, as demonstrated by ones that allow Sweet32 attacks, if running on an Erlang/OTP virtual machine with a version less than 21.0.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-326

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075Exploit, Third Party Advisory
https://github.com/erlyaws/yaws/issues/402Issue Tracking, Third Party Advisory
https://github.com/erlyaws/yaws/releasesRelease Notes, Third Party Advisory
https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70
https://sweet32.info/Third Party Advisory
https://github.com/erlyaws/yaws/blob/c0fd79f17d52628fcec527da7fa3e788c283c445/src/yaws_config.erl#L2068-L2075Exploit, Third Party Advisory
https://github.com/erlyaws/yaws/issues/402Issue Tracking, Third Party Advisory
https://github.com/erlyaws/yaws/releasesRelease Notes, Third Party Advisory
https://medium.com/%40charlielabs101/cve-2020-12872-df315411aa70
https://sweet32.info/Third Party Advisory

Timeline

Published: May 15, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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