cve-2019-12529
Vulnerability from cvelistv5
Published
2019-07-11 18:33
Modified
2024-08-04 23:24
Severity ?
Summary
An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
cve@mitre.orghttp://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patchPatch, Vendor Advisory
cve@mitre.orghttps://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/07/msg00018.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
cve@mitre.orghttps://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4065-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/4065-2/Third Party Advisory
cve@mitre.orghttps://www.debian.org/security/2019/dsa-4507Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.squid-cache.org/Versions/v4/changesets/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patchPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/squid-cache/squid/commits/v4Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/07/msg00018.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/bugtraq/2019/Aug/42Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4065-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4065-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2019/dsa-4507Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 un problema en Squid versiones 2.x hasta 2.7.STABLE9, versiones 3.x hasta 3.5.28 y versiones 4.x hasta 4.7. Cuando Squid se configura para utilizar la autenticaci\u00f3n b\u00e1sica, el encabezado Proxy-Authorization se analiza por medio de uudecode. uudecode determina cu\u00e1ntos bytes se descodificar\u00e1n mediante la iteraci\u00f3n sobre la entrada y comprobando su tabla. A continuaci\u00f3n, la longitud se utiliza para empezar a decodificar la cadena. No hay comprobaciones para asegurarse de que la longitud que calcula no es mayor que el b\u00fafer de entrada. Esto conlleva a que la memoria adyacente esta siendo decodificada tambi\u00e9n. Un atacante no podr\u00eda recuperar los datos descodificados a menos que el mantenedor de Squid haya configurado la visualizaci\u00f3n de nombres de usuario en las p\u00e1ginas de error.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.0\",\"versionEndExcluding\":\"2.7\",\"matchCriteriaId\":\"2E2C5F7C-FADE-4A8C-8A7D-7597874B6C9A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0\",\"versionEndIncluding\":\"3.5.28\",\"matchCriteriaId\":\"FC9F2659-B37B-4E7B-AE40-B91BF3CE4E88\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0\",\"versionEndIncluding\":\"4.7\",\"matchCriteriaId\":\"61861774-A71F-48CB-B6B2-0489C57E4E66\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable1:*:*:*:*:*:*\",\"matchCriteriaId\":\"01930746-6E15-445F-BD30-C4E83FA9AE25\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*\",\"matchCriteriaId\":\"EFBB466C-C679-4B4B-87C2-E7853E5B3F04\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*\",\"matchCriteriaId\":\"A03692DD-779F-4E3C-861C-29943870A816\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*\",\"matchCriteriaId\":\"79FF6B3C-A3CE-4AA2-80F9-44D05A6B2F08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*\",\"matchCriteriaId\":\"3CF6E367-D33B-4B60-8C40-4618C47D53E8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*\",\"matchCriteriaId\":\"0FA1F4FE-629C-4489-A13C-017A824C840F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*\",\"matchCriteriaId\":\"2479C5BF-94E1-4153-9FA3-333BC00F01D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*\",\"matchCriteriaId\":\"8ABFCCCC-7584-466E-97CC-6EBD3934A70E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*\",\"matchCriteriaId\":\"F17E49BF-FB11-4EE6-B6AC-30914F381B2F\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D100F7CE-FC64-4CC6-852A-6136D72DA419\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F1E78106-58E6-4D59-990F-75DA575BFAD9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B620311B-34A3-48A6-82DF-6F078D7A4493\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*\",\"matchCriteriaId\":\"CB66DB75-2B16-4EBF-9B93-CE49D8086E41\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_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  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.