/[advisories]/10528.adv
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Revision 60 - (show annotations) (download)
Wed Jun 19 10:32:45 2013 UTC (4 years, 2 months ago) by boklm
File size: 1280 byte(s)
MGASA-2013-0178
1 type: security
2 subject: Updated nfs-utils packages fix security vulnerability
3 CVE:
4 - CVE-2013-1923
5 src:
6 2:
7 core:
8 - nfs-utils-1.2.5-1.1.mga2
9 3:
10 core:
11 - nfs-utils-1.2.7-3.1.mga3
12 description: |
13 It was reported that rpc.gssd in nfs-utils is vulnerable to DNS spoofing due
14 to it depending on PTR resolution for GSSAPI authentication. Because of this,
15 if a user where able to poison DNS to a victim's computer, they would be able
16 to trick rpc.gssd into talking to another server (perhaps with less security)
17 than the intended server (with stricter security). If the victim has write
18 access to the second (less secure) server, and the attacker has read access
19 (when they normally might not on the secure server), the victim could write
20 files to that server, which the attacker could obtain (when normally they
21 would not be able to). To the victim this is transparent because the victim's
22 computer asks the KDC for a ticket to the second server due to reverse DNS
23 resolution; in this case Krb5 authentication does not fail because the victim
24 is talking to the "correct" server (CVE-2013-1923).
25 references:
26 - https://bugs.mageia.org/show_bug.cgi?id=10528
27 - http://lists.opensuse.org/opensuse-updates/2013-06/msg00146.html
28 ID: MGASA-2013-0178

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