drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in Hashcash
Name: |
Pufferüberlauf in Hashcash |
|
ID: |
200606-25 |
|
Distribution: |
Gentoo |
|
Plattformen: |
Keine Angabe |
|
Datum: |
Mo, 26. Juni 2006, 21:19 |
|
Referenzen: |
http://www.hashcash.org/source/CHANGELOG |
|
Applikationen: |
HashCash |
|
Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigD5FD0FD84E35EEF2427DE70E Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200606-25 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: Hashcash: Possible heap overflow Date: June 26, 2006 Bugs: #134960 ID: 200606-25
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis =3D=3D=3D=3D=3D=3D=3D=3D
A heap overflow vulnerability in the Hashcash utility could allow an attacker to execute arbitrary code.
Background =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Hashcash is a utility for generating Hashcash tokens, a proof-of-work system to reduce the impact of spam.
Affected packages =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/hashcash < 1.21 >=3D 1.21
Description =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Andreas Seltenreich has reported a possible heap overflow in the array_push() function in hashcash.c, as a result of an incorrect amount of allocated memory for the "ARRAY" structure.
Impact =3D=3D=3D=3D=3D=3D
By sending malicious entries to the Hashcash utility, an attacker may be able to cause an overflow, potentially resulting in the execution of arbitrary code with the privileges of the user running the application.
Workaround =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
There is no known workaround at this time.
Resolution =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
All Hashcash users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=3Dnet-misc/hashcash-1.21"
References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[ 1 ] Hashcash ChangeLog http://www.hashcash.org/source/CHANGELOG
Availability =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200606-25.xml
Concerns? =3D=3D=3D=3D=3D=3D=3D=3D=3D
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 http://bugs.gentoo.org.
License =3D=3D=3D=3D=3D=3D=3D
Copyright 2006 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
--------------enigD5FD0FD84E35EEF2427DE70E Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc"
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFEoDFgvcL1obalX08RAgpgAJ9l0CF82HVzhR0YnJyM9RUZoq75+gCfffg8 IRgLA7QXupUk3UVoFMMijKE= =Bk6V -----END PGP SIGNATURE-----
--------------enigD5FD0FD84E35EEF2427DE70E-- -- gentoo-announce@gentoo.org mailing list
|
|
|
|