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Vulnerability details: VCID-bdtv-dtxv-aaar
Vulnerability ID VCID-bdtv-dtxv-aaar
Aliases CVE-2013-4207
Summary Buffer overflow in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) via an invalid DSA signature that is not properly handled during computation of a modular inverse and triggers the overflow during a division by zero by the bignum functionality, a different vulnerability than CVE-2013-4206.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
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
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epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2013-4207
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2013-4207
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epss 0.0093 https://api.first.org/data/v1/epss?cve=CVE-2013-4207
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4852
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2013-4207
Reference id Reference type URL
http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
https://api.first.org/data/v1/epss?cve=CVE-2013-4207
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4206
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4207
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4208
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4852
http://secunia.com/advisories/54379
http://secunia.com/advisories/54533
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-bignum-division-by-zero.html
http://www.debian.org/security/2013/dsa-2736
http://www.openwall.com/lists/oss-security/2013/08/06/11
719070 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719070
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CVE-2013-4207 https://nvd.nist.gov/vuln/detail/CVE-2013-4207
GLSA-201309-08 https://security.gentoo.org/glsa/201309-08
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-2013-4207
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 0.76009
EPSS Score 0.00497
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.