Samba has issued software updates to handle several security vulnerabilities that, if properly exploited, could enable remote attackers to execute arbitrary code with the highest privileges on impacted installations.
Main between them is CVE-2021-44142, which impacts all variations of Samba ahead of 4.13.17 and considerations an out-of-bounds heap read through/produce vulnerability in the VFS module “vfs_fruit” that presents compatibility with Apple SMB customers.
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Samba is a well-liked freeware implementation of the Server Information Block (SMB) protocol that allows users to obtain data files, printers, and other usually shared resources in excess of a network.
“All versions of Samba prior to 4.13.17 are vulnerable to an out-of-bounds heap read through compose vulnerability that will allow remote attackers to execute arbitrary code as root on influenced Samba installations that use the VFS module vfs_fruit,” the maintainers explained in an advisory printed on January 31.
According to the CERT Coordination Centre (CERT/CC), the flaw also impacts widely utilised Linux distributions these kinds of as Pink Hat, SUSE Linux, and Ubuntu.
The vulnerability, rated 9.9 on the CVSS scale, has been credited to security researcher Orange Tsai from DEVCORE, who previous 12 months disclosed the widely-exploited flaws in Microsoft Trade Server. Additionally, the repair has been issued in Samba variations 4.14.12 and 4.15.5.
Also addressed by Samba are two additional flaws —
- CVE-2021-44141 (CVSS rating: 4.2) – Info leak through symlinks of existence of information or directories exterior of the exported share (Mounted in Samba version 4.15.5)
- CVE-2022-0336 (CVSS score: 3.1) – Samba Ad buyers with permission to generate to an account can impersonate arbitrary products and services (Fixed in Samba versions 4.13.17, 4.14.12, and 4.15.4)
Samba administrators are advised to up grade to these releases or apply the patch as shortly as attainable to mitigate the defect and thwart any opportunity attacks exploiting the vulnerability.
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Some parts of this article are sourced from:
thehackernews.com