Vulnerability in Fujitsu M10-1
CVE-2020-1968
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.049 (92.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.048 · newest: 0.049 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openssl.org/news/secadv/20200909.txt (Vendor Advisory)
- usn.ubuntu.com/4504-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/09/msg00016.html (mailing-list, Mailing List, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2021.html (Third Party Advisory)
- security.netapp.com/advisory/ntap-20200911-0004/ (Third Party Advisory)
- www.oracle.com/security-alerts/cpuApr2021.html (Patch, Third Party Advisory)
- www.oracle.com//security-alerts/cpujul2021.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpuoct2021.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpuapr2022.html (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202210-02 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1968?
- CVE-2020-1968 is a low-severity vulnerability in Fujitsu M10-1, classified under Observable Discrepancy. CVSS score: 3.7/10. Published 2020-09-09.
- How severe is CVE-2020-1968?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2020-1968 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.