CVE-2015-2689

published 2020-01-24

CVE-2015-2689: 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…

Priority P3 36 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	tor	< tor 0.2.5.11-1 (bookworm)	tor 0.2.5.11-1 (bookworm)
the_tor_project	tor	—	—
the_tor_project	tor	—	—
torproject	tor	< 0.2.4.26	0.2.4.26
torproject	tor	>= 0 < 0.2.5.11-1	0.2.5.11-1
torproject	tor	>= 0 < 0.2.5.11-1	0.2.5.11-1
torproject	tor	>= 0 < 0.2.5.11-1	0.2.5.11-1
torproject	tor	>= 0 < 0.2.5.11-1	0.2.5.11-1
torproject	tor	>= 0.2.5.1 < 0.2.5.11	0.2.5.11

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P

osv 7.5 HIGH

vendor_debian 7.5 HIGH

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