drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in CrackLib
Name: |
Pufferüberlauf in CrackLib |
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ID: |
201612-25 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Do, 8. Dezember 2016, 16:35 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6318 |
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Applikationen: |
CrackLib |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --uMUk1s5hqj7KXp8bij1QNSOrDXmVL9gHn Content-Type: multipart/mixed; boundary="wjHvJ4Ue1iUvMXdQ3DBPHBUPldFnjtAQo" From: Aaron Bauman <bman@gentoo.org> To: gentoo-announce@lists.gentoo.org Message-ID: <9f024c3d-043a-474c-d977-0a57101a8ee1@gentoo.org> Subject: [ GLSA 201612-25 ] CrackLib: Buffer overflow
--wjHvJ4Ue1iUvMXdQ3DBPHBUPldFnjtAQo Content-Type: multipart/alternative; boundary="------------21D405391CFD61DDA1D58974"
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201612-25 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: CrackLib: Buffer overflow Date: December 08, 2016 Bugs: #591456 ID: 201612-25
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Synopsis ========
A vulnerability in CrackLib could lead to the execution of arbitrary code.
Background ==========
CrackLib is a library used to enforce strong passwords by comparing user selected passwords to words in chosen word lists.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-libs/cracklib < 2.9.6-r1 >= 2.9.6-r1
Description ===========
A stack-based buffer overflow was discovered in the FascistGecosUser function of lib/fascist.c.
Impact ======
A local attacker could set a specially crafted GECOS field value in "/etc/passwd"; possibly resulting in the execution of arbitrary code with the privileges of the process, a Denial of Service condition, or the escalation of privileges.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All CrackLib users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-libs/cracklib-2.9.6-r1"
References ==========
[ 1 ] CVE-2016-6318 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6318
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201612-25
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 2016 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
--------------21D405391CFD61DDA1D58974 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
<html> <head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf= -8"> </head> <body bgcolor=3D"#FFFFFF" text=3D"#000000"> <p> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Du= tf-8"> </p> <pre style=3D"color: rgb(0, 0, 0); font-style: normal; font-variant-l= igatures: normal; font-variant-caps: normal; font-weight: normal; letter-= spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-tr= ansform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0= px; word-wrap: break-word; white-space: pre-wrap;">- - - - - - - - - - - = - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201612-25 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <a class=3D"moz-txt-link-freet= ext" href=3D"https://security.gentoo.org/">https://security.gentoo.org/</= a> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: CrackLib: Buffer overflow Date: December 08, 2016 Bugs: #591456 ID: 201612-25
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis =3D=3D=3D=3D=3D=3D=3D=3D
A vulnerability in CrackLib could lead to the execution of arbitrary code.
Background =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
CrackLib is a library used to enforce strong passwords by comparing user selected passwords to words in chosen word lists.
Affected packages =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-libs/cracklib < 2.9.6-r1 >=3D 2.9.= 6-r1=20
Description =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
A stack-based buffer overflow was discovered in the FascistGecosUser function of lib/fascist.c.
Impact =3D=3D=3D=3D=3D=3D
A local attacker could set a specially crafted GECOS field value in "/etc/passwd"; possibly resulting in the execution of arbitrary code with the privileges of the process, a Denial of Service condition, or the escalation of privileges.
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 CrackLib users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=3Dsys-libs/cracklib-2.9.6-r1"
References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[ 1 ] CVE-2016-6318 <a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.= cfm?cvename=3DCVE-2016-6318">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20= 16-6318</a>
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:
<a class=3D"moz-txt-link-freetext" href=3D"https://security.gentoo.org/g= lsa/201612-25">https://security.gentoo.org/glsa/201612-25</a>
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 <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:security@gentoo.org"= >security@gentoo.org</a> or alternatively, you may file a bug at <a class=3D"moz-txt-link-freetext" href=3D"https://bugs.gentoo.org">https= ://bugs.gentoo.org</a>.
License =3D=3D=3D=3D=3D=3D=3D
Copyright 2016 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.
<a class=3D"moz-txt-link-freetext" href=3D"http://creativecommons.org/lic= enses/by-sa/2.5">http://creativecommons.org/licenses/by-sa/2.5</a></pre> </body> </html>
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