Denial of service in Apache PDFBox



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-31811
CVE-2021-31812
CWE-ID CWE-400
CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PDFBox
Universal components / Libraries / Libraries used by multiple products

Vendor Apache Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU54079

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-31811

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when processing PDF files. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PDFBox: 2.0 - 2.0.23

CPE2.3 External links

http://lists.apache.org/thread.html/re3bd16f0cc8f1fbda46b06a4b8241cd417f71402809baa81548fc20e%40%3Cusers.pdfbox.apache.org%3E
http://lists.apache.org/thread.html/re3bd16f0cc8f1fbda46b06a4b8241cd417f71402809baa81548fc20e@%3Cusers.pdfbox.apache.org%3E
http://lists.apache.org/thread.html/rf937c2236e6c79cdb99f76a70690dd345e53dbe0707cb506a202e43e@%3Cannounce.apache.org%3E
http://www.openwall.com/lists/oss-security/2021/06/12/2
http://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Infinite loop

EUVDB-ID: #VU54080

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-31812

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when processing PDF files. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PDFBox: 2.0 - 2.0.23

CPE2.3 External links

http://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
http://lists.apache.org/thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e@%3Cusers.pdfbox.apache.org%3E
http://lists.apache.org/thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3@%3Cannounce.apache.org%3E
http://www.openwall.com/lists/oss-security/2021/06/12/1
http://lists.apache.org/thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba@%3Ccommits.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f@%3Ccommits.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb@%3Cnotifications.ofbiz.apache.org%3E
http://lists.apache.org/thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea@%3Ccommits.ofbiz.apache.org%3E


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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