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ubuntucveUbuntu.comUB:CVE-2013-4206
HistoryAug 19, 2013 - 12:00 a.m.

CVE-2013-4206

2013-08-1900:00:00
ubuntu.com
ubuntu.com
11

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.015 Low

EPSS

Percentile

86.9%

Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY
before 0.63 allows remote SSH servers to cause a denial of service (crash)
and possibly trigger memory corruption or code execution via a crafted DSA
signature, which is not properly handled when performing certain
bit-shifting operations during modular multiplication.

OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchputty<Β 0.62-6ubuntu0.1UNKNOWN
ubuntu12.10noarchputty<Β 0.62-9ubuntu0.1UNKNOWN
ubuntu13.04noarchputty<Β 0.62-10ubuntu0.1UNKNOWN

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.015 Low

EPSS

Percentile

86.9%