ID CVE-2012-6706
Summary A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].
References
Vulnerable Configurations
  • cpe:2.3:a:sophos:threat_detection_engine:*:*:*:*:*:*:*:*
    cpe:2.3:a:sophos:threat_detection_engine:*:*:*:*:*:*:*:*
  • cpe:2.3:a:rarlab:unrar:*:*:*:*:*:*:*:*
    cpe:2.3:a:rarlab:unrar:*:*:*:*:*:*:*:*
CVSS
Base: 10.0 (as of 21-10-2018 - 10:29)
Impact:
Exploitability:
CWE CWE-190
CAPEC
  • Forced Integer Overflow
    This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:N/AC:L/Au:N/C:C/I:C/A:C
refmap via4
confirm https://kc.mcafee.com/corporate/index?page=content&id=SB10205
gentoo
  • GLSA-201708-05
  • GLSA-201709-24
  • GLSA-201804-16
misc
Last major update 21-10-2018 - 10:29
Published 22-06-2017 - 13:29
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