rhsa-2021_4116
Vulnerability from csaf_redhat
Published
2021-11-03 16:34
Modified
2024-11-22 17:48
Summary
Red Hat Security Advisory: firefox security update
Notes
Topic
An update for firefox is now available for Red Hat Enterprise Linux 7.
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.
Details
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
This update upgrades Firefox to version 91.3.0 ESR.
Security Fix(es):
* Mozilla: Use-after-free in HTTP2 Session object
* Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
* Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)
* Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)
* Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)
* Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)
* Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)
* Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)
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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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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.", title: "Topic", }, { category: "general", text: "Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.\n\nThis update upgrades Firefox to version 91.3.0 ESR.\n\nSecurity Fix(es):\n\n* Mozilla: Use-after-free in HTTP2 Session object\n\n* Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3\n\n* Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)\n\n* Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)\n\n* Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)\n\n* Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)\n\n* Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)\n\n* Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)\n\nFor 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.", title: "Details", }, { category: "legal_disclaimer", text: "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", title: "Terms of Use", }, ], publisher: { category: "vendor", contact_details: "https://access.redhat.com/security/team/contact/", issuing_authority: "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", name: "Red Hat Product Security", namespace: "https://www.redhat.com", }, references: [ { category: "self", summary: "https://access.redhat.com/errata/RHSA-2021:4116", url: "https://access.redhat.com/errata/RHSA-2021:4116", }, { category: "external", summary: "https://access.redhat.com/security/updates/classification/#important", url: "https://access.redhat.com/security/updates/classification/#important", }, { category: "external", summary: "2019621", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019621", }, { category: "external", summary: "2019622", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019622", }, { category: "external", summary: "2019624", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019624", }, { category: "external", summary: "2019625", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019625", }, { category: "external", summary: "2019626", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019626", }, { category: "external", summary: "2019627", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019627", }, { category: "external", summary: "2019628", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019628", }, { category: "external", summary: "2019630", url: "https://bugzilla.redhat.com/show_bug.cgi?id=2019630", }, { category: "self", summary: "Canonical URL", url: "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4116.json", }, ], title: "Red Hat Security Advisory: firefox security update", tracking: { current_release_date: "2024-11-22T17:48:09+00:00", generator: { date: 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without notification or warning", }, { cve: "CVE-2021-38507", cwe: { id: "CWE-829", name: "Inclusion of Functionality from Untrusted Control Sphere", }, discovery_date: "2021-11-02T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2019625", }, ], notes: [ { category: "description", text: "The Mozilla Foundation Security Advisory describes this flaw as:\r\n\r\nThe Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. Port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage.", title: "Vulnerability description", }, { category: "summary", text: "Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports", title: "Vulnerability summary", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.i686", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64le", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.s390x", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.src", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.x86_64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64", 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the Same-Origin-Policy on services hosted on other ports", }, { cve: "CVE-2021-38508", cwe: { id: "CWE-1021", name: "Improper Restriction of Rendered UI Layers or Frames", }, discovery_date: "2021-11-02T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2019627", }, ], notes: [ { category: "description", text: "By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.", title: "Vulnerability description", }, { category: "summary", text: "Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing", title: "Vulnerability summary", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.i686", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64le", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.s390x", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.src", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.x86_64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64le", 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confusion and potential spoofing", }, { cve: "CVE-2021-38509", cwe: { id: "CWE-1021", name: "Improper Restriction of Rendered UI Layers or Frames", }, discovery_date: "2021-11-02T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2019628", }, ], notes: [ { category: "description", text: "Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.", title: "Vulnerability description", }, { category: "summary", text: "Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain", title: "Vulnerability summary", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.i686", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64le", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.s390x", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.src", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.x86_64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64le", 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arbitrary domain", }, { cve: "CVE-2021-43534", cwe: { id: "CWE-120", name: "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')", }, discovery_date: "2021-11-02T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2019630", }, ], notes: [ { category: "description", text: "The Mozilla Foundation Security Advisory describes this flaw as:\r\n\r\nMemory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code", title: "Vulnerability description", }, { category: "summary", text: "Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3", title: "Vulnerability summary", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.i686", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.ppc64le", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.s390x", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.src", "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.x86_64", "7Client-7.9.Z:firefox-debuginfo-0:91.3.0-1.el7_9.ppc64", 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91.3", }, { cve: "CVE-2021-43535", cwe: { id: "CWE-416", name: "Use After Free", }, discovery_date: "2021-11-02T00:00:00+00:00", ids: [ { system_name: "Red Hat Bugzilla ID", text: "2019626", }, ], notes: [ { category: "description", text: "The Mozilla Foundation Security Advisory describes this flaw as:\r\n\r\nA use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash.", title: "Vulnerability description", }, { category: "summary", text: "Mozilla: Use-after-free in HTTP2 Session object", title: "Vulnerability summary", }, { category: "general", text: "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", title: "CVSS score applicability", }, ], product_status: { fixed: [ "7Client-7.9.Z:firefox-0:91.3.0-1.el7_9.i686", 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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.