bgpd in Quagga before 0.99.17 does not properly parse AS paths, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an unknown AS type in an AS path attribute in a BGP UPDATE message.

The remote Solaris system is missing necessary patches to address security updates :

  - bgpd in Quagga before 0.99.9 allows explicitly     configured BGP peers to cause a denial of service     (crash) via a malformed (1) OPEN message or (2) a     COMMUNITY attribute, which triggers a NULL pointer     dereference. NOTE: vector 2 only exists when debugging     is enabled. (CVE-2007-4826)

  - The BGP daemon (bgpd) in Quagga 0.99.11 and earlier     allows remote attackers to cause a denial of service     (crash) via an AS path containing ASN elements whose     string representation is longer than expected, which     triggers an assert error. (CVE-2009-1572)

  - The extended-community parser in bgpd in Quagga before     0.99.18 allows remote attackers to cause a denial of     service (NULL pointer dereference and application crash)     via a malformed Extended Communities attribute.
    (CVE-2010-1674)

  - bgpd in Quagga before 0.99.18 allows remote attackers to     cause a denial of service (session reset) via a     malformed AS_PATHLIMIT path attribute. (CVE-2010-1675)

  - Stack-based buffer overflow in the     bgp_route_refresh_receive function in bgp_packet.c in     bgpd in Quagga before 0.99.17 allows remote     authenticated users to cause a denial of service (daemon     crash) or possibly execute arbitrary code via a     malformed Outbound Route Filtering (ORF) record in a BGP     ROUTE-REFRESH (RR) message. (CVE-2010-2948)

  - bgpd in Quagga before 0.99.17 does not properly parse AS     paths, which allows remote attackers to cause a denial     of service (NULL pointer dereference and daemon crash)     via an unknown AS type in an AS path attribute in a BGP     UPDATE message. (CVE-2010-2949)

  - The OSPFv3 implementation in ospf6d in Quagga before     0.99.19 allows remote attackers to cause a denial of     service (out-of-bounds memory access and daemon crash)     via a Link State Update message with an invalid IPv6     prefix length. (CVE-2011-3323)

  - The ospf6_lsa_is_changed function in ospf6_lsa.c in the     OSPFv3 implementation in ospf6d in Quagga before 0.99.19     allows remote attackers to cause a denial of service     (assertion failure and daemon exit) via trailing zero     values in the Link State Advertisement (LSA) header list     of an IPv6 Database Description message. (CVE-2011-3324)

  - ospf_packet.c in ospfd in Quagga before 0.99.19 allows     remote attackers to cause a denial of service (daemon     crash) via (1) a 0x0a type field in an IPv4 packet     header or (2) a truncated IPv4 Hello packet.
    (CVE-2011-3325)

  - The ospf_flood function in ospf_flood.c in ospfd in     Quagga before 0.99.19 allows remote attackers to cause a     denial of service (daemon crash) via an invalid Link     State Advertisement (LSA) type in an IPv4 Link State     Update message. (CVE-2011-3326)

This update of quagga fixes two security issues :

  - CVE-2010-2948: CVSS v2 Base Score: 6.5 (MEDIUM)     (AV:N/AC:L/Au:S/C:P/I:P/A:P) Stack-based buffer overflow     while processing malformed Route-Refresh messages.

  - CVE-2010-2949: CVSS v2 Base Score: 5.0 (MEDIUM)     (AV:N/AC:L/Au:N/C:N/I:N/A:P) Denial of service while     processing malformed BGP update AS path messages

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2010-0945 advisory.

    [0.99.15-5_el6_0.1]
    - Resolves: #644830 - CVE-2010-2948 CVE-2010-2949 quagga various flaws

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

A stack-based buffer overflow flaw was found in the way the Quagga bgpd daemon processed certain BGP Route Refresh (RR) messages. A configured BGP peer could send a specially crafted BGP message, causing bgpd on a target system to crash or, possibly, execute arbitrary code with the privileges of the user running bgpd.
(CVE-2010-2948)

Note: On Scientific Linux 6 it is not possible to exploit CVE-2010-2948 to run arbitrary code as the overflow is blocked by FORTIFY_SOURCE.

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon parsed the paths of autonomous systems (AS). A configured BGP peer could crash bgpd on a target system via a specially crafted BGP message. (CVE-2010-2949)

After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

According to its self-reported version number, the installation of Quagga's BGPD listening on the remote host is affected by multiple vulnerabilities :

  - A stack-based buffer overflow vulnerability can be     triggered by a specially crafted BGP ROUTE-REFRESH     message with a malformed Outbound Route Filtering record     sent by a pre-configured peer. (CVE-2010-2948)

  - A denial of service vulnerability in BGPD can be     triggered by a specially crafted UPDATE message with an     unknown AS type in an AS path attribute.
    (CVE-2012-0250)

The remote host is affected by the vulnerability described in GLSA-201202-02 (Quagga: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Quagga. Please review       the CVE identifiers referenced below for details.
  Impact :

    A BGP peer could send a Route-Refresh message with specially crafted ORF       record, which can cause Quagga's bgpd to crash or possibly execute       arbitrary code with the privileges of the user running Quagga's bgpd; a       BGP update AS path request with unknown AS type, or malformed       AS-Pathlimit or Extended-Community attributes could lead to Denial of       Service (daemon crash), an error in bgpd when handling AS_PATH attributes       within UPDATE messages can       be exploited to cause a heap-based buffer overflow resulting in a crash       of the       daemon and disruption of IPv4 routing, two errors in ospf6d and ospfd can       each be exploited to crash the daemon and disrupt IP routing.
  Workaround :

    There is no known workaround at this time.

This security update of quagga fixes :

  - Direct BGP peers can send malformed extended communities     which lead to a NULL pointer dereference.
    (CVE-2010-1674)

  - A malformed AS_PATHLIMIT path attribute will cause a     session reset in Quagga. This malformed package is     forwarded by other routers and can be used to take 'all'     Quagga routers off the Internet with one single     announcement. (feature removed). (CVE-2010-1675)

  - CVE-2010-2948: CVSS v2 Base Score: 5.4     (AV:A/AC:M/Au:N/C:P/I:P/A:P): Buffer Errors (CWE-119)

  - CVE-2010-2949: CVSS v2 Base Score: 1.8     (AV:A/AC:H/Au:N/C:N/I:N/A:P)

This security update of quagga fixes :

  - Direct BGP peers can send malformed extended communities     which lead to a NULL pointer dereference.
    (CVE-2010-1674)

  - A malformed AS_PATHLIMIT path attribute will cause a     session reset in Quagga. This malformed package is     forwarded by other routers and can be used to take 'all'     Quagga routers off the Internet with one single     announcement. (feature removed). (CVE-2010-1675)

  - CVSS v2 Base Score: 5.4 (AV:A/AC:M/Au:N/C:P/I:P/A:P):
    Buffer Errors (CWE-119). (CVE-2010-2948)

  - CVSS v2 Base Score: 1.8 (AV:A/AC:H/Au:N/C:N/I:N/A:P).
    (CVE-2010-2949)

It was discovered that Quagga incorrectly handled certain Outbound Route Filtering (ORF) records. A remote authenticated attacker could use this flaw to cause a denial of service or potentially execute arbitrary code. The default compiler options for Ubuntu 8.04 LTS and later should reduce the vulnerability to a denial of service.
(CVE-2010-2948)

It was discovered that Quagga incorrectly parsed certain AS paths. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. (CVE-2010-2949).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Updated quagga packages that fix two security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Quagga is a TCP/IP based routing software suite. The Quagga bgpd daemon implements the BGP (Border Gateway Protocol) routing protocol.

A stack-based buffer overflow flaw was found in the way the Quagga bgpd daemon processed certain BGP Route Refresh (RR) messages. A configured BGP peer could send a specially crafted BGP message, causing bgpd on a target system to crash or, possibly, execute arbitrary code with the privileges of the user running bgpd.
(CVE-2010-2948)

Note: On Red Hat Enterprise Linux 6 it is not possible to exploit CVE-2010-2948 to run arbitrary code as the overflow is blocked by FORTIFY_SOURCE.

A NULL pointer dereference flaw was found in the way the Quagga bgpd daemon parsed the paths of autonomous systems (AS). A configured BGP peer could crash bgpd on a target system via a specially crafted BGP message. (CVE-2010-2949)

Users of quagga should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the bgpd daemon must be restarted for the update to take effect.

This update of quagga fixes two security issues :

  - Stack-based buffer overflow while processing malformed     Route-Refresh messages. (CVE-2010-2948: CVSS v2 Base     Score: 6.5 (MEDIUM) (AV:N/AC:L/Au:S/C:P/I:P/A:P))

  - Denial of service while processing malformed BGP update     AS path messages. (CVE-2010-2949: CVSS v2 Base Score:
    5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P))

Several remote vulnerabilities have been discovered in the BGP implementation of Quagga, a routing daemon.

The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2010-2948     When processing a crafted Route Refresh message received     from a configured, authenticated BGP neighbor, Quagga     may crash, leading to a denial of service.

  - CVE-2010-2949     When processing certain crafted AS paths, Quagga would     crash with a NULL pointer dereference, leading to a     denial of service. In some configurations, such crafted     AS paths could be relayed by intermediate BGP routers.

In addition, this update contains a reliability fix: Quagga will no longer advertise confederation-related AS paths to non-confederation peers, and reject unexpected confederation-related AS paths by resetting the session with the BGP peer which is advertising them.
(Previously, such AS paths would trigger resets of unrelated BGP sessions.)

ID	Name	Product	Family	Severity
80751	Oracle Solaris Third-Party Patch Update : quagga (multiple_denial_of_service_vulnerabilities4)	Nessus	Solaris Local Security Checks	medium
75721	openSUSE Security Update : quagga (openSUSE-SU-2010:0984-1)	Nessus	SuSE Local Security Checks	medium
68154	Oracle Linux 6 : quagga (ELSA-2010-0945)	Nessus	Oracle Linux Local Security Checks	high
60914	Scientific Linux Security Update : quagga on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
59788	Quagga < 0.99.17 BGPD Multiple Vulnerabilities	Nessus	Misc.	medium
58081	GLSA-201202-02 : Quagga: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
57249	SuSE 10 Security Update : quagga (ZYPP Patch Number 7406)	Nessus	SuSE Local Security Checks	medium
53795	openSUSE Security Update : quagga (openSUSE-SU-2010:0984-1)	Nessus	SuSE Local Security Checks	medium
53687	openSUSE Security Update : quagga (openSUSE-SU-2010:0984-1)	Nessus	SuSE Local Security Checks	medium
53255	SuSE 10 Security Update : quagga (ZYPP Patch Number 7355)	Nessus	SuSE Local Security Checks	medium
53250	SuSE9 Security Update : quagga (YOU Patch Number 12685)	Nessus	SuSE Local Security Checks	medium
51074	Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS : quagga vulnerabilities (USN-1027-1)	Nessus	Ubuntu Local Security Checks	medium
51056	RHEL 6 : quagga (RHSA-2010:0945)	Nessus	Red Hat Local Security Checks	medium
50960	SuSE 11 / 11.1 Security Update : quagga (SAT Patch Numbers 3535 / 3536)	Nessus	SuSE Local Security Checks	medium
50822	SuSE 10 Security Update : quagga (ZYPP Patch Number 7237)	Nessus	SuSE Local Security Checks	medium
49121	Debian DSA-2104-1 : quagga - several vulnerabilities	Nessus	Debian Local Security Checks	medium

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