VDB-149645 · CVE-2020-8597 · RHSA-2020:0630

ppp up to 2.4.8 pppd eap.c eap_request/eap_response rhostname buffer overflow

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.
8.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in ppp up to 2.4.8. Affected by this issue is the function eap_request/eap_response of the file eap.c of the component pppd. The manipulation of the argument rhostname leads to buffer overflow. This vulnerability is referenced as CVE-2020-8597. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ppp up to 2.4.8. This issue affects the function eap_request/eap_response of the file eap.c of the component pppd. The manipulation of the argument rhostname with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions.

The weakness was published 02/03/2020. The identification of this vulnerability is CVE-2020-8597 since 02/03/2020. 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 scanner Nessus provides a plugin with the ID 236550 (Alibaba Cloud Linux 3 : 0071: ppp (ALINUX3-SA-2022:0071)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (236550). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: 236550
Nessus Name: Alibaba Cloud Linux 3 : 0071: ppp (ALINUX3-SA-2022:0071)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

02/03/2020 🔍
02/03/2020 +0 days 🔍
02/04/2020 +1 days 🔍
12/03/2025 +2129 days 🔍

Sourcesinfo

Advisory: RHSA-2020:0630
Status: Confirmed

CVE: CVE-2020-8597 (🔍)
GCVE (CVE): GCVE-0-2020-8597
GCVE (VulDB): GCVE-100-149645

Entryinfo

Created: 02/04/2020 10:53
Updated: 12/03/2025 19:13
Changes: 02/04/2020 10:53 (37), 02/04/2020 10:58 (17), 03/28/2024 08:52 (19), 03/28/2024 08:55 (1), 05/21/2025 22:16 (8), 12/03/2025 19:13 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.