Summary
It was discovered that Ruby incorrectly handled parsing of an XML document
that has specific XML characters in an attribute value using REXML gem. An
attacker could use this issue to cause Ruby to crash, resulting in a denial
of service. This issue only affected in Ubuntu 22.04 LTS and Ubuntu 24.04
LTS. (CVE-2024-35176, CVE-2024-39908, CVE-2024-41123)
It was discovered that Ruby incorrectly handled parsing of an XML document
that has many entity expansions with SAX2 or pull parser API. An attacker
could use this issue to cause Ruby to crash, resulting in a denial of
service. (CVE-2024-41946)
It was discovered that Ruby incorrectly handled parsing of an XML document
that has many digits in a hex numeric character reference. An attacker
could use this issue to cause Ruby to crash, resulting in a denial of
service. (CVE-2024-49761)
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | ruby3.0 | 3.0.2-7ubuntu2.8 |
| Ubuntu · 24.04 LTS 24.04:LTS | ruby3.2 | 3.2.3-1ubuntu0.24.04.3 |
Vulnerabilities 5
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Medium 6.6
REXML ReDoS vulnerability
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the…
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Medium 5.3CVE-2024-35176 Public exploit
REXML contains a denial of service vulnerability
REXML is an XML toolkit for Ruby. The REXML gem before 3.2.6 has a denial of service vulnerability when it parses an XML that has many `<`s in an attribute value. Those who need to parse untrusted XMLs may be impacted to this vulnerability. The REXML gem 3.2.…
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Medium 5.3
REXML DoS vulnerability
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.2 has some DoS vulnerabilities when it parses an XML that has many specific characters such as whitespace character, `>]` and `]>`. The REXML gem 3.3.3 or later include the patches to fix these vulner…
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Medium 5.3
REXML DoS vulnerability
REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to fix the vulnerability.
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Medium 4.3CVE-2024-39908 Public exploit
Denial of service in REXML
REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. Th…