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debianDebianDEBIAN:DLA-187-1:CA35B
HistoryApr 06, 2015 - 10:07 p.m.

[SECURITY] [DLA 187-1] tor security update

2015-04-0622:07:41
lists.debian.org
18

CVSS2

5

Attack Vector

NETWORK

Attack 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

CVSS3

7.5

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

AI Score

7.4

Confidence

High

EPSS

0.002

Percentile

61.5%

Package : tor
Version : 0.2.4.27-1~deb6u1
CVE ID : CVE-2015-2928 CVE-2015-2929

Several hidden service related denial-of-service issues have been
discovered in Tor, a connection-based low-latency anonymous
communication system.

o "disgleirio" discovered that a malicious client could trigger an
assertion failure in a Tor instance providing a hidden service, thus
rendering the service inaccessible.
[CVE-2015-2928]

o "DonnchaC" discovered that Tor clients would crash with an assertion
failure upon parsing specially crafted hidden service descriptors.
[CVE-2015-2929]

o Introduction points would accept multiple INTRODUCE1 cells on one
circuit, making it inexpensive for an attacker to overload a hidden
service with introductions. Introduction points no longer allow
multiple such cells on the same circuit.

CVSS2

5

Attack Vector

NETWORK

Attack 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

CVSS3

7.5

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

AI Score

7.4

Confidence

High

EPSS

0.002

Percentile

61.5%