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    CVE-2021-23336 (GCVE-0-2021-23336)

    Vulnerability from nvd – Published: 2021-02-15 12:15 – Updated: 2025-12-17 21:16
    VLAI
    Title
    Web Cache Poisoning
    Summary
    The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • Web Cache Poisoning
    • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
    Assigner
    References
    URL Tags
    https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-…
    https://github.com/python/cpython/pull/24297
    https://snyk.io/blog/cache-poisoning-in-popular-o…
    http://www.openwall.com/lists/oss-security/2021/02/19/4 mailing-list
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.apache.org/thread.html/rf9fa47ab664… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://security.gentoo.org/glsa/202104-04 vendor-advisory
    https://lists.apache.org/thread.html/ra8ce70088ba… mailing-list
    http://www.openwall.com/lists/oss-security/2021/05/01/2 mailing-list
    https://lists.apache.org/thread.html/rc005f4de9d9… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://www.oracle.com/security-alerts/cpuApr2021.html
    https://security.netapp.com/advisory/ntap-2021032…
    https://www.oracle.com//security-alerts/cpujul2021.html
    https://www.oracle.com/security-alerts/cpuoct2021.html
    https://www.oracle.com/security-alerts/cpujan2022.html
    https://lists.debian.org/debian-lts-announce/2023… mailing-list
    Impacted products
    Vendor Product Version
    n/a python/cpython Affected: 0 , < unspecified (custom)
    Affected: unspecified , < 3.6.13 (custom)
    Affected: 3.7.0 , < unspecified (custom)
    Affected: unspecified , < 3.7.10 (custom)
    Affected: 3.8.0 , < unspecified (custom)
    Affected: unspecified , < 3.8.8 (custom)
    Affected: 3.9.0 , < unspecified (custom)
    Affected: unspecified , < 3.9.2 (custom)
    Date Public
    2021-02-15 00:00
    Credits
    Snyk Security Team
    Show details on NVD website

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    CVE-2020-24977 (GCVE-0-2020-24977)

    Vulnerability from nvd – Published: 2020-09-03 23:20 – Updated: 2024-08-04 15:26
    VLAI
    Summary
    GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    URL Tags
    https://gitlab.gnome.org/GNOME/libxml2/-/issues/178 x_refsource_MISC
    https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
    http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.apache.org/thread.html/rf9fa47ab664… mailing-listx_refsource_MLIST
    https://security.gentoo.org/glsa/202107-05 vendor-advisoryx_refsource_GENTOO
    https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
    https://security.netapp.com/advisory/ntap-2020092… x_refsource_CONFIRM
    https://gitlab.gnome.org/GNOME/libxml2/-/commit/5… x_refsource_MISC
    https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
    https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
    Show details on NVD website

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    CVE-2021-23336 (GCVE-0-2021-23336)

    Vulnerability from cvelistv5 – Published: 2021-02-15 12:15 – Updated: 2025-12-17 21:16
    VLAI
    Title
    Web Cache Poisoning
    Summary
    The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • Web Cache Poisoning
    • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
    Assigner
    References
    URL Tags
    https://snyk.io/vuln/SNYK-UPSTREAM-PYTHONCPYTHON-…
    https://github.com/python/cpython/pull/24297
    https://snyk.io/blog/cache-poisoning-in-popular-o…
    http://www.openwall.com/lists/oss-security/2021/02/19/4 mailing-list
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.apache.org/thread.html/rf9fa47ab664… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.debian.org/debian-lts-announce/2021… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://security.gentoo.org/glsa/202104-04 vendor-advisory
    https://lists.apache.org/thread.html/ra8ce70088ba… mailing-list
    http://www.openwall.com/lists/oss-security/2021/05/01/2 mailing-list
    https://lists.apache.org/thread.html/rc005f4de9d9… mailing-list
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
    https://www.oracle.com/security-alerts/cpuApr2021.html
    https://security.netapp.com/advisory/ntap-2021032…
    https://www.oracle.com//security-alerts/cpujul2021.html
    https://www.oracle.com/security-alerts/cpuoct2021.html
    https://www.oracle.com/security-alerts/cpujan2022.html
    https://lists.debian.org/debian-lts-announce/2023… mailing-list
    Impacted products
    Vendor Product Version
    n/a python/cpython Affected: 0 , < unspecified (custom)
    Affected: unspecified , < 3.6.13 (custom)
    Affected: 3.7.0 , < unspecified (custom)
    Affected: unspecified , < 3.7.10 (custom)
    Affected: 3.8.0 , < unspecified (custom)
    Affected: unspecified , < 3.8.8 (custom)
    Affected: 3.9.0 , < unspecified (custom)
    Affected: unspecified , < 3.9.2 (custom)
    Date Public
    2021-02-15 00:00
    Credits
    Snyk Security Team
    Show details on NVD website

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    CVE-2020-24977 (GCVE-0-2020-24977)

    Vulnerability from cvelistv5 – Published: 2020-09-03 23:20 – Updated: 2024-08-04 15:26
    VLAI
    Summary
    GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.
    Severity
    No CVSS data available.
    CWE
    • n/a
    Assigner
    References
    URL Tags
    https://gitlab.gnome.org/GNOME/libxml2/-/issues/178 x_refsource_MISC
    https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
    http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
    https://lists.apache.org/thread.html/rf9fa47ab664… mailing-listx_refsource_MLIST
    https://security.gentoo.org/glsa/202107-05 vendor-advisoryx_refsource_GENTOO
    https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC
    https://security.netapp.com/advisory/ntap-2020092… x_refsource_CONFIRM
    https://gitlab.gnome.org/GNOME/libxml2/-/commit/5… x_refsource_MISC
    https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
    https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
    Show details on NVD website

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