Advisories

libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder

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Severity
medium
Date
Affecting
  • libaec <= 1.1.7

CWE
  • CWE-196 Unsigned to Signed Conversion Error
CVSS
5.8
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
HaiND from the Post and Telecommunication Institute of Technology
Description
libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.

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