oss-sec mailing list archives
Re: CVE Request -- spice: unsafe clients ring access abort
From: Kurt Seifried <kseifried () redhat com>
Date: Mon, 15 Jul 2013 22:39:08 -0600
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/15/2013 05:25 PM, Petr Matousek wrote:
Currently, both red_channel_pipes_add_type() and red_channel_pipes_add_empty_msg() use plaing RING_FOREACH() which is not safe versus removals from the ring within the loop body. Yet, when (network) error does occur, the current item could be removed from the ring down the road and the assertion in RING_FOREACH()'s ring_next() could trip, causing the process containing the spice server to abort. An user able to initiate spice connection to the guest could use this flaw to crash the guest. Upstream fix: http://cgit.freedesktop.org/spice/spice/commit/?id=53488f0275d6c8a121af49f7ac817d09ce68090d References: https://bugzilla.redhat.com/show_bug.cgi?id=984769 Thanks,
Please use CVE-2013-4130 for this issue. - -- Kurt Seifried Red Hat Security Response Team (SRT) PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) iQIcBAEBAgAGBQJR5M5sAAoJEBYNRVNeJnmT6dAQAMErLuphvHoyUmO9INJIw53K aa9PDr2OFf8IuqlBVqams3ZCtq3BEyRoQ4x3Xbb09uszokbGvsuRWMQzwrvIbqma Uhu+X5BqFY16bKoIAZuMyvYqrTz0Y9VBM9SjHT4guYANbdREIckI8xOKEVg+ZhWD Qkh4n4cXTziIJFOAOVGkZUMInbqSIWk+f7KQlHhiPpfsAHXU0eySKJAlF6OdSgNz 0MfTkpB+bdPZd+elE2FSRWrCbxcRLIUTr2nQOVyIi/4IOaI/L7q63GgdpRNDC2t5 nI/tLz+wJYxbLRho71eE0gtAK037PMZfpM3Nq4TZ2ytlXYBB7cMNUt/WNgoKD+NT ScCRAWD149ZJFmbv8OK/Kc2AM7NpC8H+LN3WgIp1UT4HNWR9LiPUxg0NAi+DU3qa FUBwhVTmXWV2GTOtHz8rhR5vTG+9Vnp/8atzAsYGkexQxpSdDQWroobjDuTUl5LQ oLEXIfFU4A7saegI3VQalQrHvPqMJSj8+Y1mqem8KNAA/cYy6Jvc4Os7sK8gp9y2 qabj/h6QyVIrRbGH6aCyUQfAMDkn1LY/2fZe1ztT7MOx3wPRsGJIGOyR62P0OrNK di7f4O2GUIy9v4scYjH6nSBDCYL5qQLumSXLo5jBPPWcn0AHcws4padVj9jF+WWU F9e1cvSeFzuz8fExm+NJ =Qdgu -----END PGP SIGNATURE-----
Current thread:
- CVE Request -- spice: unsafe clients ring access abort Petr Matousek (Jul 15)
- Re: CVE Request -- spice: unsafe clients ring access abort Kurt Seifried (Jul 15)