CVE-2021-23758GHSA-6R7C-6W96-8PVWSNYK-DOTNET-AJAXPRO2-1925971
Deserialization of Untrusted Data
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 21.11.29.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The ajaxpro.2 package, a .NET library used for AJAX calls, is affected by this vulnerability. An attacker could exploit it to run arbitrary code on the server by sending crafted data that causes the library to deserialize malicious .NET objects.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
All versions of package ajaxpro.2 are vulnerable to Deserialization of Untrusted Data due to the possibility of deserialization of arbitrary .NET classes, which can be abused to gain remote code execution.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- Record last updated
- CISA remediation deadline
Due date for US federal agencies to patch
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- n/a AjaxPro.2
fixed in unspecified
- AjaxNetProfessionalNuGet
fixed in 21.11.29.1