CVE-2021-35516

Apache Commons Compress 1.6 to 1.20 denial of service vulnerability

Published Jul 13, 2021 CVSS 3.1 · 7.5 High EPSS 12.4% KEV · Not listed
Description
When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.

Remediation

Vendor Workaround

Commons Compress users should upgrade to 1.21 or later. With Compress 1.19 we introduced a feature that tries to recover broken 7z archives, which makes it far easier to exploit this weakness. As a result we have disabled the recovery code by default and users need to enable it explicitly. In addition users are able to control the amount of memory SevenZFile may use and we strongly recommend using this feature when trying to recover broken archives.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-1684 When reading a specially crafted 7Z archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' sevenz package.
Github GHSA Github GHSA GHSA-crv7-7245-f45f Improper Handling of Length Parameter Inconsistency in Compress
References
Link Providers
http://www.openwall.com/lists/oss-security/2021/07/13/2 cve-icon cve-icon cve-icon
https://commons.apache.org/proper/commons-compress/security-reports.html cve-icon cve-icon cve-icon
https://lists.apache.org/thread.html/r67ef3c07fe3b8c1b02d48012149d280ad6da8e4cec253b527520fb2b%40%3Cdev.poi.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/r9f54c0caa462267e0cc68b49f141e91432b36b23348d18c65bd0d040%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/racd0c0381c8404f298b226cd9db2eaae965b14c9c568224aa3f437ae%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rb064d705fdfa44b5dae4c366b369ef6597951083196321773b983e71%40%3Ccommits.pulsar.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rb6e1fa80d34e5ada45f72655d84bfd90db0ca44ef19236a49198c88c%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rb7adf3e55359819e77230b4586521e5c6874ce5ed93384bdc14d6aee%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rba65ed5ddb0586f5b12598f55ec7db3633e7b7fede60466367fbf86a%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rd4332baaf6debd03d60deb7ec93bee49e5fdbe958cb6800dff7fb00e%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf5b1016fb15b7118b9a5e16bb0b78cb4f1dfcf7821eb137ab5757c91%40%3Cannounce.apache.org%3E cve-icon cve-icon
https://lists.apache.org/thread.html/rf68442d67eb166f4b6cf0bbbe6c7f99098c12954f37332073c9822ca%40%3Cuser.commons.apache.org%3E cve-icon cve-icon cve-icon
https://lists.apache.org/thread.html/rfba19167efc785ad3561e7ef29f340d65ac8f0d897aed00e0731e742%40%3Cnotifications.skywalking.apache.org%3E cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2021-35516 cve-icon
https://security.netapp.com/advisory/ntap-20211022-0001/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2021-35516 cve-icon
https://www.oracle.com/security-alerts/cpuapr2022.html cve-icon cve-icon
https://www.oracle.com/security-alerts/cpujan2022.html cve-icon cve-icon
https://www.oracle.com/security-alerts/cpujul2022.html cve-icon cve-icon
https://www.oracle.com/security-alerts/cpuoct2021.html cve-icon cve-icon
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Aug 4, 2024, 12:40 AM
Reserved
Jun 27, 2021, 12:00 AM
Status
Modified
Published
Jul 13, 2021, 8:15 AM
Modified
Jun 17, 2026, 3:57 AM
Severity
Moderate
Public date
Jul 13, 2021, 12:00 AM