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  5. CVE-2021-32825

CVE-2021-32825: Path Traversal

August 16, 2021 (updated July 2, 2022)

bblfshd is an open source self-hosted server for source code parsing. In bblfshd there is a zipslip vulnerability. The unsafe handling of symbolic links in an unpacking routine may enable attackers to read and/or write to arbitrary locations outside the designated target folder. This issue may lead to arbitrary file write (with same permissions as the program running the unpack operation) if the attacker can control the archive file.

References

  • nvd.nist.gov/vuln/detail/CVE-2021-32825

Code Behaviors & Features

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Affected versions

All versions before 2021-08-11

Fixed versions

  • v2021-08-11

Solution

Upgrade to version 2021-08-11 or above.

Impact 9.1 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

Source file

go/github.com/bblfsh/bblfshd/CVE-2021-32825.yml

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