ID CVE-2019-6250
Summary A pointer overflow, with code execution, was discovered in ZeroMQ libzmq (aka 0MQ) 4.2.x and 4.3.x before 4.3.1. A v2_decoder.cpp zmq::v2_decoder_t::size_ready integer overflow allows an authenticated attacker to overwrite an arbitrary amount of bytes beyond the bounds of a buffer, which can be leveraged to run arbitrary code on the target system. The memory layout allows the attacker to inject OS commands into a data structure located immediately after the problematic buffer (i.e., it is not necessary to use a typical buffer-overflow exploitation technique that changes the flow of control).
References
Vulnerable Configurations
  • cpe:2.3:a:zeromq:libzmq:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:zeromq:libzmq:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:zeromq:libzmq:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVSS
Base: 9.0 (as of 03-04-2019 - 13:38)
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 SINGLE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:N/AC:L/Au:S/C:C/I:C/A:C
refmap via4
confirm
debian DSA-4368
gentoo GLSA-201903-22
Last major update 03-04-2019 - 13:38
Published 13-01-2019 - 15:29
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