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Vulnerability details: VCID-yfyf-tvd9-aaan
Vulnerability ID VCID-yfyf-tvd9-aaan
Aliases CVE-2017-6542
Summary The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.
Status Published
Exploitability 2.0
Weighted Severity 8.8
Risk 10.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6542.html
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epss 0.46764 https://api.first.org/data/v1/epss?cve=CVE-2017-6542
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6542
generic_textual Medium https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-6542
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-6542
generic_textual Medium http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
Reference id Reference type URL
http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6542.html
https://api.first.org/data/v1/epss?cve=CVE-2017-6542
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6542
https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8
https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=4ff22863d895cb7ebfced4cf923a012a614adaa8
https://security.gentoo.org/glsa/201703-03
https://security.gentoo.org/glsa/201706-09
https://www.exploit-db.com/exploits/42137/
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
http://www.securityfocus.com/bid/97156
http://www.securitytracker.com/id/1038067
857642 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=857642
cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
cpe:2.3:o:opensuse_project:leap:42.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse_project:leap:42.1:*:*:*:*:*:*:*
CVE-2017-6542 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/42137.txt
CVE-2017-6542 https://nvd.nist.gov/vuln/detail/CVE-2017-6542
CVE-2017-6542 Exploit https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
Data source Exploit-DB
Date added June 7, 2017
Description PuTTY < 0.68 - 'ssh_agent_channel_data' Integer Overflow Heap Corruption
Ransomware campaign use Known
Source publication date June 7, 2017
Exploit type dos
Platform linux
Source update date June 7, 2017
Source URL https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-6542
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-6542
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.95075
EPSS Score 0.10838
Published At Dec. 27, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.