VAR-200708-0172
Vulnerability from variot - Updated: 2025-04-10 22:44Multiple memory leaks in Cisco IOS 12.0 through 12.4 allow remote attackers to cause a denial of service (device crash) via a malformed SIP packet, aka (1) CSCsf11855, (2) CSCeb21064, (3) CSCse40276, (4) CSCse68355, (5) CSCsf30058, (6) CSCsb24007, and (7) CSCsc60249. (CSCsf11855, CSCeb21064, CSCse40276, CSCse68355, CSCsf30058, CSCsb24007, CSCsc60249)Device crashes and denial of service (DoS) It may be in a state. These issues pertain to the following protocols or features: Session Initiation Protocol (SIP) Media Gateway Control Protocol (MGCP) Signaling protocols H.323, H.254 Real-time Transport Protocol (RTP) Facsimile reception A remote attacker can exploit these issues to execute arbitrary code or cause denial-of-service conditions. Cisco IOS is the operating system used in Cisco networking equipment. Cisco IOS has loopholes in processing various protocol packets. Remote attackers may take advantage of these loopholes to make the device unavailable. 323 packets, RTP packets, or receiving a very large packet when receiving a fax, can cause the service to crash or the router to hang.
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1) Errors when processing SIP packets can be exploited to crash the device or allow execution of arbitrary code via specially-crafted SIP packets.
2) Errors when processing MGCP packets can be exploited to cause the device to crash or become unresponsive via specially-crafted MGCP packets.
3) Errors when processing H.323 packets can be exploited to crash the device via specially crafted H.323 packets.
4) Errors when processing RTP packets can be exploited to crash the device via specially crafted RTP packets.
5) An error within Facsimile reception can be exploited to crash the device via an overly large packet.
Please see the vendor's advisory for a list of affected versions.
SOLUTION: Apply updated versions. See vendor advisory for more details.
PROVIDED AND/OR DISCOVERED BY: Reported by the vendor.
ORIGINAL ADVISORY: http://www.cisco.com/warp/public/707/cisco-sa-20070808-IOS-voice.shtml
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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