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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:266378
[Eng]
Version
2
Class
vulnerability
ALTXid
499613
Language
Russian
Severity
Medium
Title
Уязвимость в antisamy до 1.7.4 (CVE-2023-43643)
Description
# ImpactThere is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output.# PatchesPatched in AntiSamy 1.7.4 and later. See important remediation details in the reference given below.# WorkaroundsIf you cannot upgrade to a fixed version of the library, the following mitigation can be applied until you can upgrade: Manually edit your AntiSamy policy file (e.g., antisamy.xml) by deleting the `preserveComments` directive or setting its value to `false`, if present. Also it would be useful to make AntiSamy remove the `noscript` tag by adding this in your tag definitions under the `<tagrules>` node (or deleting it entirely if present):```xml<tag name="noscript" action="remove"/>```As the previously mentioned policy settings are preconditions for the mXSS attack to work, changing them as recommended should be sufficient to protect you against this vulnerability when using a vulnerable version of this library. However, the existing bug would still be present in AntiSamy or its parser dependency (neko-htmlunit). The safety of this workaround relies on configurations that may change in the future and don't address the root cause of the vulnerability. As such, it is strongly recommended to upgrade to a fixed version of AntiSamy.# For more informationIf you have any questions or comments about this advisory:Email one of the project co-leaders, listed on the [OWASP AntiSamy project](https://owasp.org/www-project-antisamy/) page, under "Leaders".
Family
unix
Product
antisamy
Reference
FSTEC: BDU:2024-00589
FSTEC: BDU:2024-00589
Id:
BDU:2024-00589
Reference:
https://bdu.fstec.ru/vul/2024-00589
CVE: CVE-2023-43643
CVE: CVE-2023-43643
Id:
CVE-2023-43643
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-43643
Comment
: AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to version 1.7.4, there is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the `preserveComments` directive must be enabled in your policy file and also allow for certain tags at the same time. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy's sanitized output. This issue has been patched in AntiSamy 1.7.4 and later.
CVSSv3 Score:
6.1
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
REQUIRED
Scope:
CHANGED
Confidentiality impact:
LOW
Integrity impact:
LOW
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE:
79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))
References:
https://github.com/nahsra/antisamy/security/advisories/GHSA-pcf2-gh6g-h5r2 (MISC)
https://github.com/nahsra/antisamy/releases/tag/v1.7.4 (MISC)
3rdPartyLinux: Jar
3rdPartyLinux: Jar
Id:
Jar
Reference:
https://github.com/advisories?query=cve:CVE-2023-43643+type:reviewed+ecosystem:maven
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