CVE-2013-2251

Apache Struts: Improper Input Validation

As of , CVE-2013-2251 in Apache Struts is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 25 March 2022
US federal deadline
15 April 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.90 on 25 March 2022EPSS on the day CISA listed it.
Public exploit
1 Metasploit module and 2 Exploit-DB entries (2 verified)
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Apache Struts allows remote attackers to execute arbitrary Object-Graph Navigation Language (OGNL) expressions.

CISA's description

Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.

The CVE record's description, from redhat

CVE published
18 July 2013
Assigned by
redhat
CVSS
9.8 Critical (CVSS 3.1, from CISA-ADP)
CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-20
Improper Input Validation
CISA SSVC, exploitation
active
CISA SSVC, automatable
yes
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 27135).
  3. Exploit-DB published an exploit (EDB-ID 44583).
  4. CISA added it to its list of exploited vulnerabilities.
  5. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Struts: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2017-5638Remote Code ExecutionApache StrutsPatch this weekRansomware use; Metasploit module; EPSS 0.99; verified Exploit-DB entry0.99
CVE-2018-11776Remote Code ExecutionApache StrutsPatch this weekMetasploit module; EPSS 0.99; verified Exploit-DB entry0.99
CVE-2017-9805Deserialization of Untrusted DataApache StrutsPatch this weekMetasploit module; EPSS 0.990.99
CVE-2020-17530Remote Code ExecutionApache StrutsPatch this weekMetasploit module; EPSS 0.960.96

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