CVE-2018-6551 — Integer Overflow or Wraparound in Glibc

CWE-190 — Integer Overflow or WraparoundCWE-787 — Out-of-bounds Write7 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.4%
top 38.22%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
GNU Glibc
Timeline
PublishedFeb 2
Latest updateMay 13

Description

The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶Debiangnu/glibc< 2.27-1+3
▶NVDgnu/glibc2.24 — 2.26

🔴Vulnerability Details

3
GHSA
GHSA-39wv-6252-46w2: The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2↗2022-05-13
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CVEList
CVE-2018-6551: The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2↗2018-02-02
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OSV
CVE-2018-6551: The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2↗2018-02-02
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📋Vendor Advisories

2
Red Hat
glibc: integer overflow in malloc functions↗2018-02-02
▶
Debian
CVE-2018-6551: glibc - The malloc implementation in the GNU C Library (aka glibc or libc6), from versio...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-6551 glibc: integer overflow in malloc functions↗2018-02-05
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CVE-2018-6551 — Integer Overflow or Wraparound in Glibc | cvebase