CVE-2020-29573

sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://security.gentoo.org/glsa/202101-20	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0004/	Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=26649	Issue Tracking Patch Third Party Advisory
https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:a:netapp:cloud_backup:-:::::::*
	cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:::::::*

History

No history.

Information

Published : 2020-12-06 00:15

Updated : 2023-04-26 19:09

NVD link : CVE-2020-29573

Mitre link : CVE-2020-29573

CVE.ORG link : CVE-2020-29573

JSON object : View

Products Affected

gnu

glibc

netapp

cloud_backup
solidfire_baseboard_management_controller

redhat

enterprise_linux

CWE

CWE-787

Out-of-bounds Write

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