drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in libbsd
Name: |
Pufferüberlauf in libbsd |
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ID: |
201607-13 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mi, 20. Juli 2016, 14:40 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2090 |
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Applikationen: |
libbsd |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --S3SKlHTfavGIqem79IV88xKgWtDmtir6w Content-Type: multipart/mixed; boundary="eQBF4u2OoKP8c66Nj5ANElKJbQrOdbXtx" From: Aaron Bauman <bman@gentoo.org> To: gentoo-announce@lists.gentoo.org Message-ID: <80d10308-3641-49c5-c897-c9558161d4cb@gentoo.org> Subject: [ GLSA 201607-13 ] libbsd: Arbitrary code execution
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201607-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: libbsd: Arbitrary code execution Date: July 20, 2016 Bugs: #573160 ID: 201607-13
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Synopsis ========
A buffer overflow in libbsd might allow remote attackers to execute arbitrary code.
Background ==========
This library provides useful functions commonly found on BSD systems, and lacking on others like GNU systems, thus making it easier to port projects with strong BSD origins, without needing to embed the same code over and over again on each project.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libbsd < 0.8.2 >= 0.8.2
Description ===========
libbsd contains a buffer overflow in the fgetwln() function. An if statement, which is responsible for checking the necessity to reallocate memory in the target buffer, is off by one therefore an out of bounds write occurs.
Impact ======
Remote attackers could potentially execute arbitrary code with the privileges of the process.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All libbsd users should upgrade to the latest version:
# emerge --sync # emerge --ask --verbose --oneshot ">=dev-libs/libbsd-0.8.2"
References ==========
[ 1 ] CVE-2016-2090 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2090
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201607-13
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
--------------125444EDED9313C34D8EEFAF 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: = normal; font-weight: normal; letter-spacing: normal; line-height: normal;= orphans: auto; text-align: start; text-indent: 0px; text-transform: none= ; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap= : break-word; white-space: pre-wrap;">- - - - - - - - - - - - - - - - - -= - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201607-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <a class=3D"moz-txt-link-freet= ext" href=3D"https://security.gentoo.org/">https://security.gentoo.org/</= a> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: libbsd: Arbitrary code execution Date: July 20, 2016 Bugs: #573160 ID: 201607-13
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis =3D=3D=3D=3D=3D=3D=3D=3D
A buffer overflow in libbsd might allow remote attackers to execute arbitrary code.
Background =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
This library provides useful functions commonly found on BSD systems, and lacking on others like GNU systems, thus making it easier to port projects with strong BSD origins, without needing to embed the same code over and over again on each project.
Affected packages =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libbsd < 0.8.2 >=3D 0= =2E8.2=20
Description =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
libbsd contains a buffer overflow in the fgetwln() function. An if statement, which is responsible for checking the necessity to reallocate memory in the target buffer, is off by one therefore an out of bounds write occurs.
Impact =3D=3D=3D=3D=3D=3D
Remote attackers could potentially execute arbitrary code with the privileges of the process.
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 libbsd users should upgrade to the latest version:
# emerge --sync # emerge --ask --verbose --oneshot ">=3Ddev-libs/libbsd-0.8.2"
References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[ 1 ] CVE-2016-2090 <a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.= cfm?cvename=3DCVE-2016-2090">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20= 16-2090</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/201607-13">https://security.gentoo.org/glsa/201607-13</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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