Otkrivene su četiri ranjivosti programskog paketa krb5. Udaljeni zlonamjerni korisnik može ih iskoristiti za pokretanje proizvoljnog programskog koda, izvođenje DoS (eng. Denial of Service) napada, obilaženje postavljenih ograničenja, izmjenu podataka i otkrivanje osjetljivih informacija.
Paket:
krb 5.x
Operacijski sustavi:
SUSE Linux Enterprise Server (SLES) 10
Kritičnost:
10
Problem:
pogreška u programskoj komponenti, preljev međuspremnika
Propusti su posljedica preljeva spremnika u datoteci "libtelnet/encrypt.c", pogreške u datoteci "ftpd.c" te pogreške u funkciji "kg_accept_krb5".
Posljedica:
Udaljeni napadač može iskoristiti navedene propuste za proizvoljno izvršavanje programskog koda, izvođenje DoS (eng. Denial of Service) napada, zaobilaženje pojedinih sigurnosnih ograničenja te stvaranje, izmjenu, brisanje i čitanje datoteka.
Rješenje:
Rješenje problema sigurnosti je nadogradnja paketa na novije inačice.
SUSE Security Update: Security update for krb5
______________________________________________________________________________
Announcement ID: SUSE-SU-2012:0042-1
Rating: important
References: #596826 #650650 #698471 #738632
Cross-References: CVE-2011-4862
Affected Products:
SUSE Linux Enterprise Server 10 SP2
______________________________________________________________________________
An update that solves one vulnerability and has three fixes
is now available.
Description:
This update of krb5 fixes several security issues.
* CVE-2011-4862: A remote code execution in the
kerberized telnet daemon was fixed. (This only affects the
ktelnetd from the krb5-appl RPM, not the regular telnetd
supplied by SUSE.)
* CVE-2011-1526 / MITKRB5-SA-2011-005: Fixed krb5 ftpd
unauthorized file access problems.
* CVE-2010-1323 / MITKRB5-SA-2010-007: Fixed multiple
checksum handling vulnerabilities, where: o krb5 clients
might have accepted unkeyed SAM-2 challenge checksums o
krb5 might have accepted KRB-SAFE checksums with
low-entropy derived keys
* CVE-2010-1321, MITKRB5-SA-2010-005: Fixed GSS-API
library null pointer dereference
Security Issue reference:
* CVE-2011-4862
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4862
>
Indications:
Please install this update.
Package List:
- SUSE Linux Enterprise Server 10 SP2 (i586 s390x x86_64):
krb5-1.4.3-19.43.37.1
krb5-apps-clients-1.4.3-19.43.37.1
krb5-apps-servers-1.4.3-19.43.37.1
krb5-client-1.4.3-19.43.37.1
krb5-devel-1.4.3-19.43.37.1
krb5-server-1.4.3-19.43.37.1
- SUSE Linux Enterprise Server 10 SP2 (s390x x86_64):
krb5-32bit-1.4.3-19.43.37.1
krb5-devel-32bit-1.4.3-19.43.37.1
References:
http://support.novell.com/security/cve/CVE-2011-4862.html
https://bugzilla.novell.com/596826
https://bugzilla.novell.com/650650
https://bugzilla.novell.com/698471
https://bugzilla.novell.com/738632
http://download.novell.com/patch/finder/?keywords=c6533e0368b2b223506fedc65580c4ce
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