Vulnerability index

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Tor MEDIUM 5.0
CVE-2012-3517

Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors rel…

Fix: after 0.2.2.37
Fix from $1,600 2012-08-26
Tor MEDIUM 5.0
CVE-2012-3518

The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allo…

Fix: after 0.2.2.37
Fix from $1,600 2012-08-26
Tor MEDIUM 5.0
CVE-2012-3519

routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow re…

Fix: after 0.2.2.37
Fix from $1,600 2012-08-26
Tor HIGH 7.6
CVE-2011-2778

Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of service (memory corruption) or possibly execu…

Fix: after 0.2.2.34
Fix from $1,950 2011-12-23
Tor MEDIUM 5.8
CVE-2011-2768

Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote r…

Fix: after 0.2.2.33
Fix from $1,600 2011-12-23
Tor MEDIUM 5.0
CVE-2011-1924

Buffer overflow in the policy_summarize function in or/policies.c in Tor before 0.2.1.30 allows remote attackers to cause a denial of service (direct…

Fix: after 0.2.1.29
Fix from $1,600 2011-06-14
Tor MEDIUM 5.0
CVE-2011-0493

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha might allow remote attackers to cause a denial of service (assertion failure and daemon exit) v…

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor MEDIUM 5.0
CVE-2011-0491

The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, wh…

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor MEDIUM 5.0
CVE-2011-0492

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (assertion failure and daemon exit) via bl…

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor MEDIUM 6.8
CVE-2011-0427

Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corr…

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor MEDIUM 5.0
CVE-2011-0490

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cau…

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor MEDIUM 5.0
CVE-2011-0015

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not properly check the amount of compression in zlib-compressed data, which allows remote …

Fix: after 0.2.1.28
Fix from $1,600 2011-01-19
Tor HIGH 10.0
CVE-2010-1676EPSS 8%

Heap-based buffer overflow in Tor before 0.2.1.28 and 0.2.2.x before 0.2.2.20-alpha allows remote attackers to cause a denial of service (daemon cras…

Fix: after 0.2.1.1.27
Fix from $1,950 2010-12-22
Tor MEDIUM 5.0
CVE-2010-0383

Tor before 0.2.1.22, and 0.2.2.x before 0.2.2.7-alpha, uses deprecated identity keys for certain directory authorities, which makes it easier for man…

Mitigation only
Fix from $1,600 2010-01-25
Tor MEDIUM 5.0
CVE-2010-0385

Tor before 0.2.1.22, and 0.2.2.x before 0.2.2.7-alpha, when functioning as a bridge directory authority, allows remote attackers to obtain sensitive …

Mitigation only
Fix from $1,600 2010-01-25
Tor MEDIUM 5.0
CVE-2009-2425

Tor before 0.2.0.35 allows remote attackers to cause a denial of service (application crash) via a malformed router descriptor.

Patch available
Fix from $1,600 2009-07-10
Tor MEDIUM 5.0
CVE-2009-2426

The connection_edge_process_relay_cell_not_open function in src/or/relay.c in Tor 0.2.x before 0.2.0.35 and 0.1.x before 0.1.2.8-beta allows exit rel…

Patch available
Fix from $1,600 2009-07-10
Tor HIGH 10.0
CVE-2009-0939

Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstr…

Fix: after 0.2.0.33
Fix from $1,950 2009-03-18
Tor MEDIUM 5.0
CVE-2009-0936

Unspecified vulnerability in Tor before 0.2.0.34 allows attackers to cause a denial of service (infinite loop) via "corrupt votes."

Fix: after 0.2.0.33
Fix from $1,600 2009-03-18
Tor MEDIUM 5.0
CVE-2009-0937

Unspecified vulnerability in Tor before 0.2.0.34 allows directory mirrors to cause a denial of service via unknown vectors.

Fix: after 0.2.0.33
Fix from $1,600 2009-03-18
Tor MEDIUM 5.0
CVE-2009-0938

Unspecified vulnerability in Tor before 0.2.0.34 allows directory mirrors to cause a denial of service (exit node crash) via "malformed input."

Fix: after 0.2.0.33
Fix from $1,600 2009-03-18
Tor MEDIUM 5.1
CVE-2009-0654

Tor 0.2.0.28, and probably 0.2.0.34 and earlier, allows remote attackers, with control of an entry router and an exit router, to confirm that a sende…

Fix: after 0.2.0.34
Fix from $1,600 2009-02-20
Tor HIGH 10.0
CVE-2009-0414

Unspecified vulnerability in Tor before 0.2.0.33 has unspecified impact and remote attack vectors that trigger heap corruption.

Fix: after 0.2.0.32
Fix from $1,950 2009-02-03
Tor HIGH 9.3
CVE-2008-5398

Tor before 0.2.0.32 does not properly process the ClientDNSRejectInternalAddresses configuration option in situations where an exit relay issues a po…

Fix: after 0.1.2.31
Fix from $1,950 2008-12-09
Tor HIGH 7.2
CVE-2008-5397

Tor before 0.2.0.32 does not properly process the (1) User and (2) Group configuration options, which might allow local users to gain privileges by l…

Fix: after 0.1.2.31
Fix from $1,950 2008-12-09
Tor MEDIUM 5.8
CVE-2007-4174EPSS 6%

Tor before 0.1.2.16, when ControlPort is enabled, does not properly restrict commands to localhost port 9051, which allows remote attackers to modify…

Fix: after 0.1.2.15
Fix from $1,600 2007-08-07
Tor MEDIUM 6.4
CVE-2007-4097

Tor before 0.1.2.15 sends "destroy cells" containing the reason for tearing down a circuit, which allows remote attackers to obtain sensitive informa…

Patch available
Fix from $1,600 2007-07-30
Tor MEDIUM 5.8
CVE-2007-4096

Buffer overflow in Tor before 0.1.2.15, when using BSD natd support, allows remote attackers to cause a denial of service via unspecified vectors.

Patch available
Fix from $1,600 2007-07-30
Tor MEDIUM 5.8
CVE-2007-4098

Tor before 0.1.2.15 does not properly distinguish "streamids from different exits," which might allow remote attackers with control over Tor routers …

Patch available
Fix from $1,600 2007-07-30
Tor MEDIUM 5.8
CVE-2007-4099

Tor before 0.1.2.15 can select a guard node beyond the first listed never-before-connected-to guard node, which allows remote attackers with control …

Patch available
Fix from $1,600 2007-07-30