CVE-2017-17426

The malloc function in the GNU C Library (aka glibc or libc6) 2.26 could return a memory block that is too small if an attempt is made to allocate an object whose size is close to SIZE_MAX, potentially leading to a subsequent heap overflow. This occurs because the per-thread cache (aka tcache) feature enables a code path that lacks an integer overflow check.

CVSS v3 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://sourceware.org/bugzilla/show_bug.cgi?id=22375	Exploit Issue Tracking
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=34697694e8a93b325b18f25f7dcded55d6baeaf6
https://sourceware.org/bugzilla/show_bug.cgi?id=22375	Exploit Issue Tracking
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=34697694e8a93b325b18f25f7dcded55d6baeaf6

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:glibc:2.26:*:*:*:*:*:*:*

History

No history.

Information

Published : 2017-12-05 17:29

Updated : 2025-04-20 01:37

NVD link : CVE-2017-17426

Mitre link : CVE-2017-17426

CVE.ORG link : CVE-2017-17426

JSON object : View

Products Affected

gnu

glibc

CWE

CWE-190

Integer Overflow or Wraparound

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