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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:818
[Eng]
Version
4
Class
patch
ALTXid
35213
Language
Russian
Severity
NotAvailable
Title
Обновление DSA-1544-1 pdns-recursor - уязвимость отравления кэша
Description
Amit Klein discovered that pdns-recursor, a caching DNS resolver, uses a weak random number generator to create DNS transaction IDs and UDP source port numbers. As a result, cache poisoning attacks were simplified.
Family
unix
Platform
Debian GNU/Linux 4.0
Product
pdns-recursor
Reference
VENDOR: DSA-1544-1
VENDOR: DSA-1544-1
Id:
DSA-1544-1
Reference:
http://www.debian.org/security/dsa-1544-1
CVE: CVE-2008-1637
CVE: CVE-2008-1637
Id:
CVE-2008-1637
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1637
Comment
: PowerDNS Recursor before 3.1.5 uses insufficient randomness to calculate (1) TRXID values and (2) UDP source port numbers, which makes it easier for remote attackers to poison a DNS cache, related to (a) algorithmic deficiencies in rand and random functions in external libraries, (b) use of a 32-bit seed value, and (c) choice of the time of day as the sole seeding information.
CVSSv2 Score:
6.8
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE:
189 (Numeric Errors)
References:
http://doc.powerdns.com/changelog.html (CONFIRM)
http://doc.powerdns.com/powerdns-advisory-2008-01.html (CONFIRM)
SUSE-SR:2008:012 (SUSE)
29584 (SECUNIA)
29737 (SECUNIA)
29764 (SECUNIA)
29830 (SECUNIA)
30581 (SECUNIA)
GLSA-200804-22 (GENTOO)
DSA-1544 (DEBIAN)
20080331 Paper by Amit Klein (Trusteer): "PowerDNS Recursor DNS Cache Poisoning [pharming]" (BUGTRAQ)
28517 (BID)
http://www.trusteer.com/docs/PowerDNS_recursor_DNS_Cache_Poisoning.pdf (MISC)
http://www.trusteer.com/docs/powerdnsrecursor.html (MISC)
ADV-2008-1046 (VUPEN)
powerdns-dnscache-weak-security(41534) (XF)
FEDORA-2008-3010 (FEDORA)
FEDORA-2008-3036 (FEDORA)
CVE: CVE-2008-3217
CVE: CVE-2008-3217
Id:
CVE-2008-3217
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3217
Comment
: PowerDNS Recursor before 3.1.6 does not always use the strongest random number generator for source port selection, which makes it easier for remote attack vectors to conduct DNS cache poisoning. NOTE: this is related to incomplete integration of security improvements associated with addressing CVE-2008-1637.
CVSSv2 Score:
6.8
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE:
189 (Numeric Errors)
References:
http://doc.powerdns.com/changelog.html#CHANGELOG-RECURSOR-3-1-6 (CONFIRM)
31311 (SECUNIA)
http://wiki.powerdns.com/cgi-bin/trac.fcgi/changeset/1179 (CONFIRM)
[oss-security] 20080709 CVE request: PowerDNS recursor source port randomization (MLIST)
[oss-security] 20080710 Re: DNS vulnerability: other relevant software (MLIST)
[oss-security] 20080716 Re: CVE request: PowerDNS recursor source port randomization (MLIST)
30782 (BID)
powerdns-recursor-rng-weak-security(43925) (XF)
FEDORA-2008-6893 (FEDORA)
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