Ausführen beliebiger Kommandos in MirBSD Korn Shell
ID: | 201511-01 |
Distribution: | Gentoo |
Plattformen: | Keine Angabe |
Datum: | Mo, 2. November 2015, 22:59 |
Referenzen: | https://www.mirbsd.org/permalinks/wlog-10_e20141003-tg.htm#e20141003-tg_wlog-10 |
Applikationen: | MirBSD Korn Shell |
Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --FAuDsmfkgqu32xrSUiATopLgmtwgL1kDX Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201511-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: MirBSD Korn Shell: Arbitrary code execution Date: November 02, 2015 Bugs: #524414 ID: 201511-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== An attacker who already had access to the environment could so append values to parameters passed through programs. Background ========== MirBSD Korn Shell is an actively developed free implementation of the Korn Shell programming language and a successor to the Public Domain Korn Shell. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-shells/mksh < 50c >= 50c Description =========== Improper sanitation of environment import allows for appending of values to passed parameters. Impact ====== An attacker who already had access to the environment could so append values to parameters passed through programs (including sudo(8) or setuid) to shell scripts, including indirectly, after those programs intended to sanitise the environment, e.g. invalidating the last $PATH component. Workaround ========== There is no known workaround at this time. Resolution ========== All mksh users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/mksh-50c" References ========== [ 1 ] mksh R50c released, security fix https://www.mirbsd.org/permalinks/wlog-10_e20141003-tg.htm#e20141003-tg_wlog-10 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201511-01 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 2015 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 --FAuDsmfkgqu32xrSUiATopLgmtwgL1kDX Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJWN5JYAAoJEDkRiObnjK1ykiMH/3WuyX/BEnOKVpMlvAGQh2W1 p0ydJDSf43FV+sLgDxV7xekEaFrzvzgcvU9G0GJgY0TO4HtlMr5akGb9Vg/R/C6X Tc7ZE9g0LRk9Os0ggJyr9v0Ly9oWbTWZpeuS7EP9CAOyGboxsgV3srrxx19UpM1b TTLeQhQ1FSqH8tcBNrQ+TZUARXSP21jNvPILDgoRARvqki+Sgq9aKPZMpvsXzV5W FVfE8hY0Xh+OHkCA0D7WRj/MPwz+GTlUNLWWHEieZaVkkceYI9ZYGDp9Pwjy6Mub aZM9Rbzwz+rZOHZSF5/54z4cHMCKVb+ucg5AknDO6IkQ4Ca8P5HQ9N4mOdlLpGg= =JLjk -----END PGP SIGNATURE----- --FAuDsmfkgqu32xrSUiATopLgmtwgL1kDX-- |