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Vulnerability details: VCID-6xap-we19-aaaq
Vulnerability ID VCID-6xap-we19-aaaq
Aliases CVE-2015-5309
Summary Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-189 Numeric Errors
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-5309.html
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generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5309
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2015-5309
generic_textual Medium http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
Reference id Reference type URL
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html
http://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-5309.html
https://api.first.org/data/v1/epss?cve=CVE-2015-5309
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5309
https://security.gentoo.org/glsa/201606-01
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
http://www.debian.org/security/2015/dsa-3409
http://www.securitytracker.com/id/1034308
cpe:2.3:a:simon_tatham:putty:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:simon_tatham:putty:*:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
CVE-2015-5309 https://nvd.nist.gov/vuln/detail/CVE-2015-5309
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2015-5309
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
Exploit Prediction Scoring System (EPSS)
Percentile 0.82338
EPSS Score 0.02065
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.