Out-of-Bounds Affecting glibc-langpack-se package, versions <0:2.26-28.amzn2.0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Sept 2021
- disclosed18 May 2018
Introduced: 18 May 2018
CVE-2017-18269 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 glibc-langpack-se to version 0:2.26-28.amzn2.0.1 or higher.
This issue was patched in ALAS2-2018-1048.
NVD Description
Note: Versions mentioned in the description apply only to the upstream glibc-langpack-se package and not the glibc-langpack-se package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.
References
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://security.netapp.com/advisory/ntap-20190401-0001/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18269
- https://github.com/fingolfin/memmove-bug
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cd66c0e584c6d692bc8347b5e72723d02b8a8ada
- https://usn.ubuntu.com/4416-1/
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada