ID CVE-2015-8983
Summary Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.
References
Vulnerable Configurations
  • GNU glibc 2.21
    cpe:2.3:a:gnu:glibc:2.21
CVSS
Base: 6.8 (as of 22-03-2017 - 14:03)
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 MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
refmap via4
bid 72740
confirm
mlist
  • [libc-alpha] 20150814 The GNU C Library version 2.22 is now available
  • [oss-security] 20170214 Re: Pending CVE requests for glibc
Last major update 22-03-2017 - 15:12
Published 20-03-2017 - 12:59
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