SB2021122238 - Multiple vulnerabilities in IBM Security Verify Information Queue
Published: December 22, 2021 Updated: May 29, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 13 secuirty vulnerabilities.
1) NULL pointer dereference (CVE-ID: CVE-2019-18799)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in Sass::Parser::parseCompoundSelector in parser_selectors.cpp. A remote attacker can perform a denial of service (DoS) attack.
2) Heap-based buffer over-read (CVE-ID: CVE-2018-19839)
The vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to heap-based buffer over-read in the function handle_error in sass_context.cpp. A remote attacker can send a specially crafted sass file, trigger memory corruption and cause the service to crash.
3) Out-of-bounds read (CVE-ID: CVE-2019-6286)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Sass::Prelexer::skip_over_scopes in prelexer.hpp when called from Sass::Parser::parse_import(). A remote attacker can pass specially specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.
4) Out-of-bounds read (CVE-ID: CVE-2019-18798)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
LibSass before 3.6.3 allows a heap-based buffer over-read in Sass::weaveParents in ast_sel_weave.cpp.
5) Out-of-bounds read (CVE-ID: CVE-2019-6284)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Sass::Prelexer::alternatives in prelexer.hpp. A remote attacker can pass specially specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.
6) Out-of-bounds read (CVE-ID: CVE-2019-6283)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Sass::Prelexer::parenthese_scope in prelexer.hpp. A remote attacker can pass specially specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.
7) NULL pointer dereference (CVE-ID: CVE-2018-19797)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted sass input file.
8) NULL pointer dereference (CVE-ID: CVE-2018-20190)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the function Sass::Eval::operator()(Sass::Supports_Operator*) in eval.cpp. A remote attacker can trick the victim into opening a specially crafted sass input file and perform a denial of service (DoS) attack.
9) Uncontrolled Recursion (CVE-ID: CVE-2018-20821)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp. A remote attacker can trigger the vulnerability and gain access to potentially sensitive information.
10) Resource exhaustion (CVE-ID: CVE-2018-20822)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
LibSass 3.5.4 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Complex_Selector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp).
11) Use-after-free (CVE-ID: CVE-2018-19827)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
In LibSass 3.5.5, a use-after-free vulnerability exists in the SharedPtr class in SharedPtr.cpp (or SharedPtr.hpp) that may cause a denial of service (application crash) or possibly have unspecified other impact.
12) Out-of-bounds read (CVE-ID: CVE-2018-11698)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the function Sass::handle_error. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
13) Out-of-bounds read (CVE-ID: CVE-2018-11697)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists in the function Sass::Prelexer::exactly(). A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and disclose information or manipulated to read from unmapped memory causing a denial of service.
Remediation
Install update from vendor's website.