CVE-2017-1000366

Publication date 19 June 2017

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

glibc contains a vulnerability that allows specially crafted LD_LIBRARY_PATH values to manipulate the heap/stack, causing them to alias, potentially resulting in arbitrary code execution. Please note that additional hardening changes have been made to glibc to prevent manipulation of stack and heap memory but these issues are not directly exploitable, as such they have not been given a CVE. This affects glibc 2.25 and earlier.

From the Ubuntu Security Team

It was discovered that the GNU C library did not properly handle memory when processing environment variables for setuid programs. A local attacker could use this in combination with another vulnerability to gain administrative privileges.

Status

Package Ubuntu Release Status
eglibc 17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Fixed 2.19-0ubuntu6.13
glibc 17.04 zesty
Fixed 2.24-9ubuntu2.2
16.10 yakkety
Fixed 2.24-3ubuntu2.2
16.04 LTS xenial
Fixed 2.23-0ubuntu9
14.04 LTS trusty Not in release

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3323-1
    • GNU C Library vulnerability
    • 19 June 2017
    • USN-3323-2
    • GNU C Library vulnerability
    • 29 June 2017

Other references