Multiple vulnerabilities in Sass LibSass



Published: 2018-11-12 | Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-19218
CVE-2018-19219
CWE-ID CWE-125
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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LibSass
Universal components / Libraries / Libraries used by multiple products

Vendor Sass

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU36433

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-19218

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

In LibSass 3.5-stable, there is an illegal address access at Sass::Parser::parse_css_variable_value_token that will lead to a DoS attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LibSass: 3.5.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1643758


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU36434

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-19219

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

In LibSass 3.5-stable, there is an illegal address access at Sass::Eval::operator that will lead to a DoS attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LibSass: 3.5.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1643760


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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