VAR-200409-0025

Vulnerability from variot - Updated: 2025-04-03 21:38

Heap-based buffer overflow in ASN.1 decoding library in Check Point VPN-1 products, when Aggressive Mode IKE is implemented, allows remote attackers to execute arbitrary code by initiating an IKE negotiation and then sending an IKE packet with malformed ASN.1 data. A vulnerability exists in Check Point's VPN-1 Server, which is included in many Check Point products. This vulnerability may permit a remote attacker to compromise the gateway system. This issue results from insufficient boundary checks performed by the application when processing user-supplied data. This overflow occurs during the initial key exchange process, and can be triggered with a single UDP packet. Since ISAKMP uses the UDP transport, a spoofed source address can be used in an attack. Check Point reports that for a single packet attack to succeed, VPN-1 must be configured for aggressive mode key exchange. Without aggressive mode, an attacker must initiate a real key negotiation session. This vulnerability can lead to remote code execution in the context of the VPN-1 process. This can lead to a complete system compromise

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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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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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