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ubuntucveUbuntu.comUB:CVE-2015-2689
HistoryJan 24, 2020 - 12:00 a.m.

CVE-2015-2689

2020-01-2400:00:00
ubuntu.com
ubuntu.com
11

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.002 Low

EPSS

Percentile

57.5%

Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle
pending-connection resolve states during periods of high DNS load, which
allows remote attackers to cause a denial of service (assertion failure and
daemon exit) via crafted packets.

Notes

Author Note
sbeattie DoS due to DNS triggering an abort
OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchtor< 0.2.4.27-1build0.14.04.1UNKNOWN
ubuntu15.04noarchtor< 0.2.5.12-1build0.15.04.1UNKNOWN

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.002 Low

EPSS

Percentile

57.5%