GNU C Library up to 2.31 Double Function e_rem_pio2l.c memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in GNU C Library up to 2.31. This issue affects some unknown processing of the file sysdeps/ieee754/ldbl-96/e_rem_pio2l.c of the component Double Function Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2020-10029. The attack is restricted to local execution. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU C Library up to 2.31 (Software Library). It has been declared as critical. Affected by this vulnerability is an unknown code of the file sysdeps/ieee754/ldbl-96/e_rem_pio2l.c of the component Double Function Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.

The weakness was disclosed 03/04/2020. This vulnerability is known as CVE-2020-10029 since 03/04/2020. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.32 eliminates this vulnerability.

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Productinfo

Type

• Software Library

Vendor

• GNU

Name

• C Library

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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