CVE-2021-23969
published 2021-02-26CVE-2021-23969: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested…
PriorityP418medium4.3CVSS 3.1
AVNACLPRNUIRSUCLINAN
EPSS
1.21%
64.8th percentile
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
Affected
15 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | firefox | < firefox 86.0-1 (sid) | firefox 86.0-1 (sid) |
| debian | firefox-esr | < firefox 86.0-1 (sid) | firefox 86.0-1 (sid) |
| debian | thunderbird | < firefox 86.0-1 (sid) | firefox 86.0-1 (sid) |
| mozilla | firefox | < 86 | 86 |
| mozilla | firefox | < 86.0 | 86.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < 78.8 | 78.8 |
| mozilla | thunderbird | < 78.8 | 78.8 |
| mozilla | thunderbird | >= 0 < 1:78.8.0-1 | 1:78.8.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.8.0-1 | 1:78.8.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.8.0-1 | 1:78.8.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.8.0-1 | 1:78.8.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.8.1+build1-0ubuntu0.20.04.1 | 1:78.8.1+build1-0ubuntu0.20.04.1 |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N
osv4.3MEDIUM
vendor_debian4.3MEDIUM
vendor_redhat4.3MEDIUM
vendor_ubuntu4.3MEDIUM
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Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2021-05-06·CVSS 4.3
CVE-2021-23969 [MEDIUM] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, or execute arbitrary code. (CVE-2021-23968,
CVE-2021-23969, CVE-2021-23973, CVE-2021-23978)
It was discovered that Thunderbird may keep key material in memory in some
circumstances. A local attacker could potentially exploit this to obtain
private keys. (CVE-2021-29950)
Instructions: After a standard system update you need to restart Thunderbird to make
all the necessary changes.
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-02-26
CVE-2021-23971 Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, conduct cross-site scripting (XSS) attacks, bypass HTTP auth
phishing warnings, or execute arbitrary code.
Instructions: After a standard system update you need to restart Firefox to make
all the necessary changes.
Red Hat
Mozilla: Content Security Policy violation report could have contained the destination of a redirect
vendor_redhat·2021-02-23·CVSS 4.3
CVE-2021-23969 [MEDIUM] CWE-200 Mozilla: Content Security Policy violation report could have contained the destination of a redirect
Mozilla: Content Security Policy violation report could have contained the destination of a redirect
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Debian
CVE-2021-23969: firefox - As specified in the W3C Content Security Policy draft, when creating a violation...
vendor_debian·2021·CVSS 4.3
CVE-2021-23969 [MEDIUM] CVE-2021-23969: firefox - As specified in the W3C Content Security Policy draft, when creating a violation...
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
Scope: local
sid: resolved (fixed in 86.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-08: CVE-2021-23969
vendor_mozilla·CVSS 4.3
CVE-2021-23969 [MEDIUM] Mozilla Foundation Security Advisory 2021-08: CVE-2021-23969
Mozilla Foundation Security Advisory 2021-08
CVE: CVE-2021-23969
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 78.8
Mozilla
Mozilla Foundation Security Advisory 2021-07: CVE-2021-23969
vendor_mozilla·CVSS 4.3
CVE-2021-23969 [MEDIUM] Mozilla Foundation Security Advisory 2021-07: CVE-2021-23969
Mozilla Foundation Security Advisory 2021-07
CVE: CVE-2021-23969
Product: Firefox
Impact: high
Fixed in: Firefox 86
Mozilla
Mozilla Foundation Security Advisory 2021-09: CVE-2021-23969
vendor_mozilla·CVSS 4.3
CVE-2021-23969 [MEDIUM] Mozilla Foundation Security Advisory 2021-09: CVE-2021-23969
Mozilla Foundation Security Advisory 2021-09
CVE: CVE-2021-23969
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 78.8
GHSA
GHSA-hrpc-c9c2-pj6w: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL r
ghsa_unreviewed·2022-05-24
CVE-2021-23969 [MEDIUM] GHSA-hrpc-c9c2-pj6w: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL r
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
OSV
thunderbird vulnerabilities
osv·2021-05-06·CVSS 4.3
CVE-2021-23968 [MEDIUM] thunderbird vulnerabilities
thunderbird vulnerabilities
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, or execute arbitrary code. (CVE-2021-23968,
CVE-2021-23969, CVE-2021-23973, CVE-2021-23978)
It was discovered that Thunderbird may keep key material in memory in some
circumstances. A local attacker could potentially exploit this to obtain
private keys. (CVE-2021-29950)
OSV
CVE-2021-23969: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL r
osv·2021-02-26·CVSS 4.3
CVE-2021-23969 [MEDIUM] CVE-2021-23969: As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL r
As specified in the W3C Content Security Policy draft, when creating a violation report, "User agents need to ensure that the source file is the URL requested by the page, pre-redirects. If that’s not possible, user agents need to strip the URL down to an origin to avoid unintentional leakage." Under certain types of redirects, Firefox incorrectly set the source file to be the destination of the redirects. This was fixed to be the redirect destination's origin. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1542194https://lists.debian.org/debian-lts-announce/2021/03/msg00000.htmlhttps://security.gentoo.org/glsa/202104-09https://security.gentoo.org/glsa/202104-10https://www.debian.org/security/2021/dsa-4866https://www.mozilla.org/security/advisories/mfsa2021-07/https://www.mozilla.org/security/advisories/mfsa2021-08/https://www.mozilla.org/security/advisories/mfsa2021-09/https://bugzilla.mozilla.org/show_bug.cgi?id=1542194https://lists.debian.org/debian-lts-announce/2021/03/msg00000.htmlhttps://security.gentoo.org/glsa/202104-09https://security.gentoo.org/glsa/202104-10https://www.debian.org/security/2021/dsa-4866https://www.mozilla.org/security/advisories/mfsa2021-07/https://www.mozilla.org/security/advisories/mfsa2021-08/https://www.mozilla.org/security/advisories/mfsa2021-09/
2021-02-26
Published