CVEvulnerability
CVE-2017-18269
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2018-05-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-119
Description
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.
Affected configurations
• gnu glibc (>= 2.21 <= 2.27)
Related
Weakness · CWE (1)
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
References
- https://github.com/fingolfin/memmove-bug Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190329-0001/ security.netapp.com
- https://security.netapp.com/advisory/ntap-20190401-0001/ security.netapp.com
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644 Issue Tracking
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada sourceware.org
- https://usn.ubuntu.com/4416-1/ usn.ubuntu.com
- https://github.com/fingolfin/memmove-bug Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190329-0001/ security.netapp.com
- https://security.netapp.com/advisory/ntap-20190401-0001/ security.netapp.com
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644 Issue Tracking
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada sourceware.org
- https://usn.ubuntu.com/4416-1/ usn.ubuntu.com