CVE-2020-1968

moderate-risk

Published 2020-09-09

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v).

Do I need to act?

1.3% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.7/10 Low

NETWORK / HIGH complexity

Affected Products (18)

Openssl

Ubuntu Linux

Debian Linux

Jd Edwards World Security

Peoplesoft Enterprise Peopletools

Ethernet Switch Es2-64 Firmware

Ethernet Switch Es2-72 Firmware

M10-1 Firmware

M10-4 Firmware

M10-4S Firmware

M12-1 Firmware

M12-2 Firmware

M12-2S Firmware

Ethernet Switch Es1-24 Firmware

Ethernet Switch Tor-72 Firmware

Affected Vendors

Debian Oracle Openssl Fujitsu Canonical

References (20)

Mailing List https://lists.debian.org/debian-lts-announce/2020/09/msg00016.html

Third Party Advisory https://security.gentoo.org/glsa/202210-02

Third Party Advisory https://security.netapp.com/advisory/ntap-20200911-0004/

Third Party Advisory https://usn.ubuntu.com/4504-1/

Vendor Advisory https://www.openssl.org/news/secadv/20200909.txt

Patch https://www.oracle.com//security-alerts/cpujul2021.html

Patch https://www.oracle.com/security-alerts/cpuApr2021.html

Patch https://www.oracle.com/security-alerts/cpuapr2022.html

Third Party Advisory https://www.oracle.com/security-alerts/cpujan2021.html

Patch https://www.oracle.com/security-alerts/cpuoct2021.html