igraph up to 0.7.1 igraph_trie.c igraph_i_strdiff null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in igraph up to 0.7.1. This issue affects the function igraph_i_strdiff of the file igraph_trie.c. The manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2018-20349. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in igraph up to 0.7.1. This issue affects the function igraph_i_strdiff of the file igraph_trie.c. 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 igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object.

The bug was discovered 12/04/2018. The weakness was disclosed 12/22/2018 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2018-20349 since 12/21/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 17 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/04/2018 🔍
12/21/2018 +17 days 🔍
12/21/2018 +0 days 🔍
12/22/2018 +1 days 🔍
12/22/2018 +0 days 🔍
06/20/2023 +1641 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1141
Status: Not defined

CVE: CVE-2018-20349 (🔍)
GCVE (CVE): GCVE-0-2018-20349
GCVE (VulDB): GCVE-100-128297

Entryinfo

Created: 12/22/2018 10:20
Updated: 06/20/2023 15:57
Changes: 12/22/2018 10:20 (56), 04/23/2020 12:26 (1), 06/20/2023 15:52 (3), 06/20/2023 15:57 (1)
Complete: 🔍
Cache ID: 216::103

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