CVE-2018-20821
published 2019-04-23CVE-2018-20821: The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value…
PriorityP425medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
2.22%
80.6th percentile
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | libsass | < libsass 3.6.3-1 (bookworm) | libsass 3.6.3-1 (bookworm) |
| libsass | libsass | >= 0 < 3.6.3-1 | 3.6.3-1 |
| libsass | libsass | >= 0 < 3.6.3-1 | 3.6.3-1 |
| libsass | libsass | >= 0 < 3.6.3-1 | 3.6.3-1 |
| libsass | libsass | >= 0 < 3.6.3-1 | 3.6.3-1 |
| sass-lang | libsass | <= 3.5.5 | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv6.5MEDIUM
vendor_debian6.5LOW
vendor_redhat6.5MEDIUM
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Red Hat
libsass: parsing component allows attackers to cause denial-of-service
vendor_redhat·2018-06-02·CVSS 6.5
CVE-2018-20821 [MEDIUM] CWE-674 libsass: parsing component allows attackers to cause denial-of-service
libsass: parsing component allows attackers to cause denial-of-service
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
Statement: This issue did not affect the versions of libsass as shipped with Red Hat Enterprise Linux 8 as the flaw was introduced in a newer version of the library.
Package: libsass (Red Hat Enterprise Linux 8) - Not affected
Debian
CVE-2018-20821: libsass - The parsing component in LibSass through 3.5.5 allows attackers to cause a denia...
vendor_debian·2018·CVSS 6.5
CVE-2018-20821 [MEDIUM] CVE-2018-20821: libsass - The parsing component in LibSass through 3.5.5 allows attackers to cause a denia...
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
Scope: local
bookworm: resolved (fixed in 3.6.3-1)
bullseye: resolved (fixed in 3.6.3-1)
forky: resolved (fixed in 3.6.3-1)
sid: resolved (fixed in 3.6.3-1)
trixie: resolved (fixed in 3.6.3-1)
GHSA
GHSA-j7pw-5g39-c2cj: The parsing component in LibSass through 3
ghsa_unreviewed·2022-05-24
CVE-2018-20821 [MEDIUM] CWE-674 GHSA-j7pw-5g39-c2cj: The parsing component in LibSass through 3
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
OSV
CVE-2018-20821: The parsing component in LibSass through 3
osv·2019-04-23·CVSS 6.5
CVE-2018-20821 [MEDIUM] CVE-2018-20821: The parsing component in LibSass through 3
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-20821 CVE-2018-20822 libsass: various flaws [epel-7]
bugzilla·2019-05-03·CVSS 6.5
CVE-2018-20821 [MEDIUM] CVE-2018-20821 CVE-2018-20822 libsass: various flaws [epel-7]
CVE-2018-20821 CVE-2018-20822 libsass: various flaws [epel-7]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-7.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the following template to for the 'fedpkg update' reque
Bugzilla
CVE-2018-20821 libsass: parsing component allows attackers to cause denial-of-service
bugzilla·2019-05-03·CVSS 6.5
CVE-2018-20821 [MEDIUM] CVE-2018-20821 libsass: parsing component allows attackers to cause denial-of-service
CVE-2018-20821 libsass: parsing component allows attackers to cause denial-of-service
The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).
Reference:
https://github.com/sass/libsass/issues/2658
Discussion:
Created libsass tracking bugs for this issue:
Affects: fedora-all [bug 1706051]
---
Created libsass tracking bugs for this issue:
Affects: epel-7 [bug 1706052]
---
First vulnerable commit:
https://github.com/sass/libsass/commit/efd97dae376de50b3e6ed724337c4f274a21491d
---
Upstream patch:
https://github.com/sass/libsass/commit/f2db04883e5fff4e03777dcc1eb60d4373c45be1
---
Statement:
This issue did not affect the versions of libsass as shipped with Red Hat
Bugzilla
CVE-2018-20821 CVE-2018-20822 libsass: various flaws [fedora-all]
bugzilla·2019-05-03·CVSS 6.5
CVE-2018-20821 [MEDIUM] CVE-2018-20821 CVE-2018-20822 libsass: various flaws [fedora-all]
CVE-2018-20821 CVE-2018-20822 libsass: various flaws [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora.
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.htmlhttps://github.com/sass/libsass/issues/2658http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.htmlhttps://github.com/sass/libsass/issues/2658
2019-04-23
Published