CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

A vulnerability was found in PoDoFo 0.9.4 (Document Reader Software). It has been rated as problematic. This issue affects the function PoDoFo::PdfParser::ReadXRefSubsection of the file PdfParser.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

The PoDoFo::PdfParser::ReadXRefSubsection function in PdfParser.cpp in PoDoFo 0.9.4 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted file.

The bug was discovered 02/03/2017. The weakness was presented 03/01/2017 by Agostino Sarubbo (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2017-5855 since 02/01/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 112081 (SUSE SLED12 Security Update : podofo (SUSE-SU-2018:2481-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172000 (OpenSUSE Security Update for podofo (openSUSE-SU-2019:0066-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (112081). See 97430, 97431, 97432 and 97434 for similar entries.

Productinfo

Type

• Document Reader Software

Name

• PoDoFo

Version

• 0.9.4

License

• free

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 112081
Nessus Name: SUSE SLED12 Security Update : podofo (SUSE-SU-2018:2481-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

02/01/2017 🔍
02/03/2017 +2 days 🔍
03/01/2017 +26 days 🔍
03/01/2017 +0 days 🔍
03/02/2017 +1 days 🔍
03/02/2017 +0 days 🔍
08/22/2018 +538 days 🔍
08/23/2018 +1 days 🔍
09/03/2020 +742 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Agostino Sarubbo
Status: Confirmed

CVE: CVE-2017-5855 (🔍)
SecurityFocus: 96516 - podofo CVE-2017-5855 Denial of Service Vulnerability
OSVDB: - CVE-2017-5855 - PoDoFo - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/02/2017 10:03
Updated: 09/03/2020 12:02
Changes: 03/02/2017 10:03 (74), 09/03/2020 12:02 (7)
Complete: 🔍

Discussion

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