CVE-2008-1897

Description

The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 3.23% Top 15%
Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://security.gentoo.org/glsa/glsa-200905-01.xml vendor advisory
http://secunia.com/advisories/29927 third party advisory vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/41966 vdb entry
http://www.securityfocus.com/bid/28901 vdb entry
http://secunia.com/advisories/30010 third party advisory vendor advisory
http://www.vupen.com/english/advisories/2008/1324 vdb entry
http://downloads.digium.com/pub/security/AST-2008-006.html
http://bugs.digium.com/view.php?id=10078
https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html vendor advisory
http://www.securityfocus.com/archive/1/491220/100/0/threaded mailing list
http://www.altsci.com/concepts/page.php?s=asteri&p=2
http://secunia.com/advisories/30042 third party advisory vendor advisory
http://www.debian.org/security/2008/dsa-1563 vendor advisory
http://secunia.com/advisories/34982 third party advisory
http://www.securitytracker.com/id?1019918 vdb entry
https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html vendor advisory
https://downloads.asterisk.org/pub/security/AST-2008-006.html
https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83
https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2
https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a
https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90
https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6
https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e
https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b
https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7
https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb
https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653

Frequently Asked Questions

What is the severity of CVE-2008-1897?
CVE-2008-1897 has been scored as a medium severity vulnerability.
How to fix CVE-2008-1897?
To fix CVE-2008-1897, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2008-1897 being actively exploited in the wild?
It is possible that CVE-2008-1897 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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