var-201208-0157
Vulnerability from variot
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 related to failed DNS requests. Tor (The Onion Router) is an implementation of the second generation of onion routing, which allows users to communicate anonymously over the Internet. Tor has a remote vulnerability in its implementation. Multiple denial-of-service vulnerabilities. 2. An information-disclosure vulnerability. 3. An out-of-bounds memory-access vulnerability. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
Mandriva Linux Security Advisory MDVSA-2013:132 http://www.mandriva.com/en/support/security/
Package : tor Date : April 10, 2013 Affected: Business Server 1.0
Problem Description:
Updated tor package fixes security vulnerabilities:
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 relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected (CVE-2011-2768).
Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values (CVE-2011-2769).
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 remote attackers to obtain sensitive information about relay selection via a timing side-channel attack (CVE-2012-3519).
Tor before 0.2.2.39, when waiting for a client to renegotiate, allowed it to add bytes to the input buffer, allowing a crash to be caused remotely (tor-5934, tor-6007).
The version of Tor shipped in MBS1 did not have correctly formed systemd unit and thus failed to start.
This updated version corrects this problem and restores working behaviour.
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2768 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2769 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3517 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3518 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3519 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4419 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5573 https://wiki.mageia.org/en/Support/Advisories/MGAA-2012-0184 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0276 https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0356
Updated Packages:
Mandriva Business Server 1/X86_64: 8cadc920e4452cd2a3551a3cb01d9fcf mbs1/x86_64/tor-0.2.2.39-1.mbs1.x86_64.rpm 7cbba7170bc4f9e6ee8409398437570c mbs1/SRPMS/tor-0.2.2.39-1.mbs1.src.rpm
To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you.
All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing:
gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98
You can view other update advisories for Mandriva Linux at:
http://www.mandriva.com/en/support/security/advisories/
If you want to report vulnerabilities, please contact
security_(at)_mandriva.com
Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux)
iD8DBQFRZVsDmqjQ0CJFipgRAm9IAJ9tYUVrI7u2V+7yJGNLn2OVMdOzcACgyrhf PUIroe88x4NDpj7AUyd2YP8= =x4YG -----END PGP SIGNATURE-----
. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201301-03
http://security.gentoo.org/
Severity: Normal Title: Tor: Multiple vulnerabilities Date: January 08, 2013 Bugs: #432188, #434882, #444804 ID: 201301-03
Synopsis
Multiple vulnerabilities have been found in Tor, allowing attackers to cause Denial of Service or obtain sensitive information. Please review the CVE identifiers referenced below for details.
Workaround
There is no known workaround at this time.
Resolution
All Tor users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.3.25"
References
[ 1 ] CVE-2012-3517 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3517 [ 2 ] CVE-2012-3518 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3518 [ 3 ] CVE-2012-3519 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3519 [ 4 ] CVE-2012-4419 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4419 [ 5 ] CVE-2012-4922 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4922 [ 6 ] CVE-2012-5573 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5573
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201301-03.xml
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2013 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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"data": "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 related to failed DNS requests. Tor (The Onion Router) is an implementation of the second generation of onion routing, which allows users to communicate anonymously over the Internet. Tor has a remote vulnerability in its implementation. Multiple denial-of-service vulnerabilities. \n2. An information-disclosure vulnerability. \n3. An out-of-bounds memory-access vulnerability. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n _______________________________________________________________________\n\n Mandriva Linux Security Advisory MDVSA-2013:132\n http://www.mandriva.com/en/support/security/\n _______________________________________________________________________\n\n Package : tor\n Date : April 10, 2013\n Affected: Business Server 1.0\n _______________________________________________________________________\n\n Problem Description:\n\n Updated tor package fixes security vulnerabilities:\n \n Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS\n certificate chain as part of an outgoing OR connection, which allows\n remote relays to bypass intended anonymity properties by reading this\n chain and then determining the set of entry guards that the client\n or bridge had selected (CVE-2011-2768). \n \n Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE\n and CREATE_FAST values in the Command field of a cell within an OR\n connection that it initiated, which allows remote relays to enumerate\n bridges by using these values (CVE-2011-2769). \n \n routerlist.c in Tor before 0.2.2.38 uses a different amount of time\n for relay-list iteration depending on which relay is chosen, which\n might allow remote attackers to obtain sensitive information about\n relay selection via a timing side-channel attack (CVE-2012-3519). \n \n Tor before 0.2.2.39, when waiting for a client to renegotiate, allowed\n it to add bytes to the input buffer, allowing a crash to be caused\n remotely (tor-5934, tor-6007). \n \n The version of Tor shipped in MBS1 did not have correctly formed\n systemd unit and thus failed to start. \n \n This updated version corrects this problem and restores working\n behaviour. \n _______________________________________________________________________\n\n References:\n\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2768\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2769\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3517\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3518\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3519\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4419\n http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5573\n https://wiki.mageia.org/en/Support/Advisories/MGAA-2012-0184\n https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0276\n https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0356\n _______________________________________________________________________\n\n Updated Packages:\n\n Mandriva Business Server 1/X86_64:\n 8cadc920e4452cd2a3551a3cb01d9fcf mbs1/x86_64/tor-0.2.2.39-1.mbs1.x86_64.rpm \n 7cbba7170bc4f9e6ee8409398437570c mbs1/SRPMS/tor-0.2.2.39-1.mbs1.src.rpm\n _______________________________________________________________________\n\n To upgrade automatically use MandrivaUpdate or urpmi. The verification\n of md5 checksums and GPG signatures is performed automatically for you. \n\n All packages are signed by Mandriva for security. You can obtain the\n GPG public key of the Mandriva Security Team by executing:\n\n gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98\n\n You can view other update advisories for Mandriva Linux at:\n\n http://www.mandriva.com/en/support/security/advisories/\n\n If you want to report vulnerabilities, please contact\n\n security_(at)_mandriva.com\n _______________________________________________________________________\n\n Type Bits/KeyID Date User ID\n pub 1024D/22458A98 2000-07-10 Mandriva Security Team\n \u003csecurity*mandriva.com\u003e\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.12 (GNU/Linux)\n\niD8DBQFRZVsDmqjQ0CJFipgRAm9IAJ9tYUVrI7u2V+7yJGNLn2OVMdOzcACgyrhf\nPUIroe88x4NDpj7AUyd2YP8=\n=x4YG\n-----END PGP SIGNATURE-----\n\n\n. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 201301-03\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n http://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: Tor: Multiple vulnerabilities\n Date: January 08, 2013\n Bugs: #432188, #434882, #444804\n ID: 201301-03\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been found in Tor, allowing attackers to\ncause Denial of Service or obtain sensitive information. Please review the\nCVE identifiers referenced below for details. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll Tor users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-misc/tor-0.2.3.25\"\n\nReferences\n==========\n\n[ 1 ] CVE-2012-3517\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3517\n[ 2 ] CVE-2012-3518\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3518\n[ 3 ] CVE-2012-3519\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3519\n[ 4 ] CVE-2012-4419\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4419\n[ 5 ] CVE-2012-4922\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4922\n[ 6 ] CVE-2012-5573\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5573\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n http://security.gentoo.org/glsa/glsa-201301-03.xml\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2013 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttp://creativecommons.org/licenses/by-sa/2.5\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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