PT-2021-3993 · Apache+4 · Apache Commons Compress+4
Oss Fuzz
·
Published
2021-07-13
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Updated
2024-08-06
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CVE-2021-35515
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Apache Commons Compress versions prior to the fixed version
Confluence Data Center versions from 7.19.23 through 8.9.3
Confluence Data Center versions from 8.5.10 through 8.5.11
Confluence Server versions from 7.19.23 through 7.19.24
Confluence Server versions from 8.5.10 through 8.5.11
Description
The issue is related to the construction of the list of codecs that decompress an entry in a specially crafted 7Z archive, which can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz package. An unauthenticated attacker can expose assets in the environment susceptible to exploitation, with no impact to confidentiality, no impact to integrity, and high impact to availability, requiring no user interaction.
Recommendations
For Confluence Data Center versions from 8.9.2 to 8.9.3, upgrade to version 8.9.4.
For Confluence Data Center versions from 8.5.10 to 8.5.11, upgrade to version 8.9.4 or 8.5.12.
For Confluence Data Center versions from 7.19.23 to 7.19.24, upgrade to version 8.9.4, 8.5.12, or 7.19.25.
For Confluence Server versions from 8.5.10 to 8.5.11, upgrade to version 8.5.12.
For Confluence Server versions from 7.19.23 to 7.19.24, upgrade to version 8.5.12 or 7.19.25.
As a temporary workaround, consider restricting access to the sevenz package until a patch is available.
Exploit
Fix
DoS
Infinite Loop
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Related Identifiers
Affected Products
Apache Commons Compress
Confluence
Debian
Red Os
Suse