CVE-2016-6489
The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channel attack.
02 Description
The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channel attack.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.00% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 91.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2017-04-14 18:00Z9 YR AGO
- Last updated
- 2024-08-06 01:29Z2 YR AGO
- Reserved
- 2016-07-28
- Assigning CNA
- debian
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-203Observable DiscrepancyBase
- Data version
- 5.1
- Document digest
- e478ee629eed9f10f367de3aeb7b058cfb547a5b46dfec6887a59d3afd205395
05 Affected products
06 References
- www.openwall.com[oss-security] 20160729 Re: CVE Request: nettle's RSA code is vulnerable to cache sharing related attackshttp://www.openwall.com/lists/oss-security/2016/07/29/7
- www.ubuntu.comUSN-3193-1http://www.ubuntu.com/usn/USN-3193-1
- security.gentoo.orgGLSA-201706-21https://security.gentoo.org/glsa/201706-21
- git.lysator.liu.sehttps://git.lysator.liu.se/nettle/nettle/commit/3fe1d6549765ecfb24f0b80b2ed086fdc818bff3
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1362016
- eprint.iacr.orghttps://eprint.iacr.org/2016/596.pdf
- rhn.redhat.comRHSA-2016:2582http://rhn.redhat.com/errata/RHSA-2016-2582.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2020.html
07 Fixed in
Debian 12
- nettle Fixed in 3.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- nettle Fixed in 3.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- nettle Fixed in 3.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- nettle Fixed in 2.7.1-1ubuntu0.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- nettle Fixed in 3.2-1ubuntu0.16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.