CVE-2019-11763
published 2020-01-08CVE-2019-11763: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML…
PriorityP422medium6.1CVSS 3.1
AVNACLPRNUIRSCCLILAN
EPSS
0.99%
58.4th percentile
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| debian | firefox | < firefox 70.0-1 (sid) | firefox 70.0-1 (sid) |
| debian | firefox-esr | < firefox 70.0-1 (sid) | firefox 70.0-1 (sid) |
| debian | thunderbird | < firefox 70.0-1 (sid) | firefox 70.0-1 (sid) |
| mozilla | firefox | < 70.0 | 70.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < 68.2 | 68.2 |
| mozilla | firefox_esr | — | — |
| mozilla | thunderbird | < 68.2 | 68.2 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 0 < 1:68.2.1-1 | 1:68.2.1-1 |
| mozilla | thunderbird | >= 0 < 1:68.2.1-1 | 1:68.2.1-1 |
| mozilla | thunderbird | >= 0 < 1:68.2.1-1 | 1:68.2.1-1 |
| mozilla | thunderbird | >= 0 < 1:68.2.1-1 | 1:68.2.1-1 |
| mozilla | thunderbird | >= 0 < 1:68.7.0+build1-0ubuntu0.16.04.2 | 1:68.7.0+build1-0ubuntu0.16.04.2 |
| mozilla | thunderbird | >= 0 < 1:68.2.2+build1-0ubuntu0.18.04.1 | 1:68.2.2+build1-0ubuntu0.18.04.1 |
| mozilla | thunderbird | >= 0 < 1:68.2.1+build1-0ubuntu0.18.04.1 | 1:68.2.1+build1-0ubuntu0.18.04.1 |
CVSS provenance
nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian6.1MEDIUM
vendor_redhat6.1MEDIUM
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GHSA
GHSA-94c9-r5wv-7vj8: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities
ghsa_unreviewed·2022-05-24
CVE-2019-11763 [MEDIUM] CWE-79 GHSA-94c9-r5wv-7vj8: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
OSV
thunderbird vulnerabilities
osv·2020-04-21·CVSS 8.8
CVE-2019-11757 [HIGH] thunderbird vulnerabilities
thunderbird vulnerabilities
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, bypass
same-origin restrictions, conduct cross-site scripting (XSS) attacks, or
execute arbitrary code. (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759,
CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763,
CVE-2019-11764, CVE-2019-17005, CVE-2019-17008, CVE-2019-17010,
CVE-2019-17011, CVE-2019-17012, CVE-2019-17016, CVE-2019-17017,
CVE-2019-17022, CVE-2019-17024, CVE-2019-17026, CVE-2019-20503,
CVE-2020-6798, CVE-2020-6800, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807,
CVE-2020
OSV
CVE-2019-11763: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities
osv·2020-01-08·CVSS 6.1
CVE-2019-11763 [MEDIUM] CVE-2019-11763: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
OSV
thunderbird regression
osv·2019-12-10·CVSS 7.5
[HIGH] thunderbird regression
thunderbird regression
USN-4202-1 fixed vulnerabilities in Thunderbird. After upgrading, Thunderbird
created a new profile for some users. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message.
An attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
bypass security restrictions, bypass
OSV
thunderbird vulnerabilities
osv·2019-11-26·CVSS 7.5
CVE-2019-11755 [HIGH] thunderbird vulnerabilities
thunderbird vulnerabilities
It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message.
An attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
bypass security restrictions, bypass same-origin restrictions, conduct
cross-site scripting (XSS) attacks, or execute arbitrary code.
(CVE-2019-11757, CVE-2019-11758, CVE-2019-11759, CVE-2019-11760,
CVE-2019-11761, CVE-2019-11762, CVE-2019-1176
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2020-04-21·CVSS 8.8
CVE-2019-11745 [HIGH] 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 in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, bypass
same-origin restrictions, conduct cross-site scripting (XSS) attacks, or
execute arbitrary code. (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759,
CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763,
CVE-2019-11764, CVE-2019-17005, CVE-2019-17008, CVE-2019-17010,
CVE-2019-17011, CVE-2019-17012, CVE-2019-17016, CVE-2019-17017,
CVE-2019-17022, CVE-2019-17024, CVE-2019-17026, CVE-2019-20503,
CVE-2020-6798,
Ubuntu
Thunderbird regression
vendor_ubuntu·2019-12-10·CVSS 7.5
[HIGH] Thunderbird regression
Title: Thunderbird regression
Summary: USN-4202-1 caused a regression in Thunderbird.
USN-4202-1 fixed vulnerabilities in Thunderbird. After upgrading, Thunderbird
created a new profile for some users. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message.
An attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2019-11-26·CVSS 7.5
CVE-2019-11755 [HIGH] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message.
An attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)
Multiple security issues were discovered in Thunderbird. If a user were
tricked in to opening a specially crafted website in a browsing context,
an attacker could potentially exploit these to cause a denial of service,
bypass security restrictions, bypass same-origin restrictions, conduct
cross-site scripting (XSS) attacks, or execute arbitrary code.
(CVE-2019-11757, CVE-2019-11758, CVE-2019-
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2019-10-23
CVE-2018-6156 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 in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, bypass security
restrictions, bypass same-origin restrictions, conduct cross-site
scripting (XSS) attacks, bypass content security policy (CSP) protections,
or execute arbitrary code.
Instructions: After a standard system update you need to restart Firefox to make
all the necessary changes.
Red Hat
Mozilla: Incorrect HTML parsing results in XSS bypass technique
vendor_redhat·2019-10-22·CVSS 6.1
CVE-2019-11763 [MEDIUM] CWE-79 Mozilla: Incorrect HTML parsing results in XSS bypass technique
Mozilla: Incorrect HTML parsing results in XSS bypass technique
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
A flaw was found in Mozilla Firefox and Thunderbird where null bytes were incorrectly parsed in HTML entities. This could lead to HTML comments being treated as code which could lead to XSS in a web application or HTML entities being
Debian
CVE-2019-11763: firefox - Failure to correctly handle null bytes when processing HTML entities resulted in...
vendor_debian·2019·CVSS 6.1
CVE-2019-11763 [MEDIUM] CVE-2019-11763: firefox - Failure to correctly handle null bytes when processing HTML entities resulted in...
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Scope: local
sid: resolved (fixed in 70.0-1)
No detection rules found.
No public exploits indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1584216https://security.gentoo.org/glsa/202003-10https://usn.ubuntu.com/4335-1/https://www.mozilla.org/security/advisories/mfsa2019-33/https://www.mozilla.org/security/advisories/mfsa2019-34/https://www.mozilla.org/security/advisories/mfsa2019-35/https://bugzilla.mozilla.org/show_bug.cgi?id=1584216https://security.gentoo.org/glsa/202003-10https://usn.ubuntu.com/4335-1/https://www.mozilla.org/security/advisories/mfsa2019-33/https://www.mozilla.org/security/advisories/mfsa2019-34/https://www.mozilla.org/security/advisories/mfsa2019-35/
2020-01-08
Published