CVE-2015-2157
The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information
02 Description
The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information
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
- 0.58% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 47.7% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
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
- 2015-03-27 14:00Z11 YR AGO
- Last updated
- 2024-08-06 05:10Z2 YR AGO
- Reserved
- 2015-02-28
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
- Data version
- 5.1
- Document digest
- ce2339a2b2747aded34cc9b5b3aaa51bdd4d40bebd9a46ba3f32b292a72c4b3c
05 Affected products
06 References
- www.chiark.greenend.org.ukhttp://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html
- lists.fedoraproject.orgFEDORA-2015-3160http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151933.html
- www.securityfocus.com72825http://www.securityfocus.com/bid/72825
- www.debian.orgDSA-3190http://www.debian.org/security/2015/dsa-3190
- lists.fedoraproject.orgFEDORA-2015-3070http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151790.html
- www.openwall.com[oss-security] 20150228 CVE Request: PuTTY fails to clear private key information from memoryhttp://www.openwall.com/lists/oss-security/2015/02/28/4
- www.chiark.greenend.org.ukhttp://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped-2.html
- www.openwall.com[oss-security] 20150228 Re: CVE Request: PuTTY fails to clear private key information from memoryhttp://www.openwall.com/lists/oss-security/2015/02/28/5
- lists.opensuse.orgopenSUSE-SU-2015:0474http://lists.opensuse.org/opensuse-updates/2015-03/msg00032.html
- lists.fedoraproject.orgFEDORA-2015-3204http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151839.html
07 Fixed in
Debian 12
- putty Fixed in 0.63-10
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- putty Fixed in 0.63-10
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- putty Fixed in 0.63-10
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- putty Fixed in 0.63-4ubuntu0.1
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.