var-202106-0522
Vulnerability from variot
curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory. curl Is vulnerable to the use of freed memory.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. HAXX Haxx curl is a set of file transfer tools that use the URL syntax to work under the command line of the Swedish Haxx (HAXX) company. The tool supports file upload and download and includes a libcurl (client URL transfer library) for program development. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202105-36
https://security.gentoo.org/
Severity: High Title: cURL: Multiple vulnerabilities Date: May 26, 2021 Bugs: #779535, #792192 ID: 202105-36
Synopsis
Multiple vulnerabilities have been found in cURL, the worst of which could result in the arbitrary execution of code.
Background
A command line tool and library for transferring data with URLs.
Affected packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/curl < 7.77.0 >= 7.77.0
Description
Multiple vulnerabilities have been discovered in cURL. Please review the CVE identifiers referenced below for details.
Impact
Please review the referenced CVE identifiers for details.
Workaround
There is no known workaround at this time.
Resolution
All cURL users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/curl-7.77.0"
References
[ 1 ] CVE-2021-22876 https://nvd.nist.gov/vuln/detail/CVE-2021-22876 [ 2 ] CVE-2021-22890 https://nvd.nist.gov/vuln/detail/CVE-2021-22890 [ 3 ] CVE-2021-22898 https://nvd.nist.gov/vuln/detail/CVE-2021-22898 [ 4 ] CVE-2021-22901 https://nvd.nist.gov/vuln/detail/CVE-2021-22901
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202105-36
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2021 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Important: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 security update Advisory ID: RHSA-2021:2471-01 Product: Red Hat JBoss Core Services Advisory URL: https://access.redhat.com/errata/RHSA-2021:2471 Issue date: 2021-06-17 CVE Names: CVE-2020-8169 CVE-2020-8284 CVE-2020-8285 CVE-2020-8286 CVE-2021-22876 CVE-2021-22890 CVE-2021-22901 CVE-2021-31618 =====================================================================
- Summary:
Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 8 zip release for RHEL 7, RHEL 8 and Microsoft Windows is available.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- Description:
Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience.
This release adds the new Apache HTTP Server 2.4.37 Service Pack 8 packages that are part of the JBoss Core Services offering.
This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 7 and includes bug fixes and enhancements. Refer to the Release Notes for information on the most significant bug fixes and enhancements included in this release.
Security Fix(es):
-
curl: Use-after-free in TLS session handling when using OpenSSL TLS backend (CVE-2021-22901)
-
httpd: NULL pointer dereference on specially crafted HTTP/2 request (CVE-2021-31618)
-
libcurl: partial password leak over DNS on HTTP redirect (CVE-2020-8169)
-
curl: FTP PASV command response can cause curl to connect to arbitrary host (CVE-2020-8284)
-
curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used (CVE-2020-8285)
-
curl: Inferior OCSP verification (CVE-2020-8286)
-
curl: Leak of authentication credentials in URL via automatic Referer (CVE-2021-22876)
-
curl: TLS 1.3 session ticket mix-up with HTTPS proxy host (CVE-2021-22890)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
- Solution:
Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.
The References section of this erratum contains a download link for the update. You must be logged in to download the update.
- Bugs fixed (https://bugzilla.redhat.com/):
1847916 - CVE-2020-8169 libcurl: partial password leak over DNS on HTTP redirect 1902667 - CVE-2020-8284 curl: FTP PASV command response can cause curl to connect to arbitrary host 1902687 - CVE-2020-8285 curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used 1906096 - CVE-2020-8286 curl: Inferior OCSP verification 1941964 - CVE-2021-22876 curl: Leak of authentication credentials in URL via automatic Referer 1941965 - CVE-2021-22890 curl: TLS 1.3 session ticket mix-up with HTTPS proxy host 1963146 - CVE-2021-22901 curl: Use-after-free in TLS session handling when using OpenSSL TLS backend 1968013 - CVE-2021-31618 httpd: NULL pointer dereference on specially crafted HTTP/2 request
- References:
https://access.redhat.com/security/cve/CVE-2020-8169 https://access.redhat.com/security/cve/CVE-2020-8284 https://access.redhat.com/security/cve/CVE-2020-8285 https://access.redhat.com/security/cve/CVE-2020-8286 https://access.redhat.com/security/cve/CVE-2021-22876 https://access.redhat.com/security/cve/CVE-2021-22890 https://access.redhat.com/security/cve/CVE-2021-22901 https://access.redhat.com/security/cve/CVE-2021-31618 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.apachehttp&downloadType=securityPatches&version=2.4.37 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.openssl&downloadType=securityPatches&version=1.1.1g https://access.redhat.com/documentation/en-us/red_hat_jboss_core_services/2.4.37/
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing the updated packages, the httpd daemon will be restarted automatically. Applications using the APR libraries, such as httpd, must be restarted for this update to take effect. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7
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"data": "curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory. curl Is vulnerable to the use of freed memory.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state. Pillow is a Python-based image processing library. \nThere is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. HAXX Haxx curl is a set of file transfer tools that use the URL syntax to work under the command line of the Swedish Haxx (HAXX) company. The tool supports file upload and download and includes a libcurl (client URL transfer library) for program development. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 202105-36\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n https://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: High\n Title: cURL: Multiple vulnerabilities\n Date: May 26, 2021\n Bugs: #779535, #792192\n ID: 202105-36\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been found in cURL, the worst of which\ncould result in the arbitrary execution of code. \n\nBackground\n==========\n\nA command line tool and library for transferring data with URLs. \n\nAffected packages\n=================\n\n -------------------------------------------------------------------\n Package / Vulnerable / Unaffected\n -------------------------------------------------------------------\n 1 net-misc/curl \u003c 7.77.0 \u003e= 7.77.0\n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in cURL. Please review\nthe CVE identifiers referenced below for details. \n\nImpact\n======\n\nPlease review the referenced CVE identifiers for details. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll cURL users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-misc/curl-7.77.0\"\n\nReferences\n==========\n\n[ 1 ] CVE-2021-22876\n https://nvd.nist.gov/vuln/detail/CVE-2021-22876\n[ 2 ] CVE-2021-22890\n https://nvd.nist.gov/vuln/detail/CVE-2021-22890\n[ 3 ] CVE-2021-22898\n https://nvd.nist.gov/vuln/detail/CVE-2021-22898\n[ 4 ] CVE-2021-22901\n https://nvd.nist.gov/vuln/detail/CVE-2021-22901\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n https://security.gentoo.org/glsa/202105-36\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2021 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttps://creativecommons.org/licenses/by-sa/2.5\n. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Important: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 security update\nAdvisory ID: RHSA-2021:2471-01\nProduct: Red Hat JBoss Core Services\nAdvisory URL: https://access.redhat.com/errata/RHSA-2021:2471\nIssue date: 2021-06-17\nCVE Names: CVE-2020-8169 CVE-2020-8284 CVE-2020-8285 \n CVE-2020-8286 CVE-2021-22876 CVE-2021-22890 \n CVE-2021-22901 CVE-2021-31618 \n=====================================================================\n\n1. Summary:\n\nRed Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 8 zip\nrelease for RHEL 7, RHEL 8 and Microsoft Windows is available. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Description:\n\nRed Hat JBoss Core Services is a set of supplementary software for Red Hat\nJBoss middleware products. This software, such as Apache HTTP Server, is\ncommon to multiple JBoss middleware products, and is packaged under Red Hat\nJBoss Core Services to allow for faster distribution of updates, and for a\nmore consistent update experience. \n\nThis release adds the new Apache HTTP Server 2.4.37 Service Pack 8 packages\nthat are part of the JBoss Core Services offering. \n\nThis release serves as a replacement for Red Hat JBoss Core Services Pack\nApache Server 2.4.37 Service Pack 7 and includes bug fixes and\nenhancements. Refer to the Release Notes for information on the most\nsignificant bug fixes and enhancements included in this release. \n\nSecurity Fix(es):\n\n* curl: Use-after-free in TLS session handling when using OpenSSL TLS\nbackend (CVE-2021-22901)\n\n* httpd: NULL pointer dereference on specially crafted HTTP/2 request\n(CVE-2021-31618)\n\n* libcurl: partial password leak over DNS on HTTP redirect (CVE-2020-8169)\n\n* curl: FTP PASV command response can cause curl to connect to arbitrary\nhost (CVE-2020-8284)\n\n* curl: Malicious FTP server can trigger stack overflow when\nCURLOPT_CHUNK_BGN_FUNCTION is used (CVE-2020-8285)\n\n* curl: Inferior OCSP verification (CVE-2020-8286)\n\n* curl: Leak of authentication credentials in URL via automatic Referer\n(CVE-2021-22876)\n\n* curl: TLS 1.3 session ticket mix-up with HTTPS proxy host\n(CVE-2021-22890)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\n3. Solution:\n\nBefore applying the update, back up your existing installation, including\nall applications, configuration files, databases and database settings, and\nso on. \n\nThe References section of this erratum contains a download link for the\nupdate. You must be logged in to download the update. \n\n4. Bugs fixed (https://bugzilla.redhat.com/):\n\n1847916 - CVE-2020-8169 libcurl: partial password leak over DNS on HTTP redirect\n1902667 - CVE-2020-8284 curl: FTP PASV command response can cause curl to connect to arbitrary host\n1902687 - CVE-2020-8285 curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used\n1906096 - CVE-2020-8286 curl: Inferior OCSP verification\n1941964 - CVE-2021-22876 curl: Leak of authentication credentials in URL via automatic Referer\n1941965 - CVE-2021-22890 curl: TLS 1.3 session ticket mix-up with HTTPS proxy host\n1963146 - CVE-2021-22901 curl: Use-after-free in TLS session handling when using OpenSSL TLS backend\n1968013 - CVE-2021-31618 httpd: NULL pointer dereference on specially crafted HTTP/2 request\n\n5. References:\n\nhttps://access.redhat.com/security/cve/CVE-2020-8169\nhttps://access.redhat.com/security/cve/CVE-2020-8284\nhttps://access.redhat.com/security/cve/CVE-2020-8285\nhttps://access.redhat.com/security/cve/CVE-2020-8286\nhttps://access.redhat.com/security/cve/CVE-2021-22876\nhttps://access.redhat.com/security/cve/CVE-2021-22890\nhttps://access.redhat.com/security/cve/CVE-2021-22901\nhttps://access.redhat.com/security/cve/CVE-2021-31618\nhttps://access.redhat.com/security/updates/classification/#important\nhttps://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.apachehttp\u0026downloadType=securityPatches\u0026version=2.4.37\nhttps://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.openssl\u0026downloadType=securityPatches\u0026version=1.1.1g\nhttps://access.redhat.com/documentation/en-us/red_hat_jboss_core_services/2.4.37/\n\n6. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2021 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\nbutyhmDY1nQ=\n=gsJD\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://listman.redhat.com/mailman/listinfo/rhsa-announce\n. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing the updated packages, the httpd daemon will be restarted\nautomatically. Applications using the APR libraries, such as httpd, must be\nrestarted for this update to take effect. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- 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.