Dovecot up to 2.2.36.2/2.3.5.0 Indexer-Worker Process memory corruption

HistoryDiffrelatejsonxmlCTI

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.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Dovecot up to 2.2.36.2/2.3.5.0 and classified as critical. This vulnerability affects unknown code of the component Indexer-Worker Process. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2019-7524. The attack requires a local approach. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Dovecot up to 2.2.36.2/2.3.5.0 (Mail Server Software). This affects an unknown part of the component Indexer-Worker Process. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components.

The bug was discovered 03/28/2019. The weakness was disclosed 03/28/2019 by Aki Tuomi (oss-sec). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2019-7524 since 02/06/2019. An attack has to be approached locally. A authentication is necessary for exploitation. Neither technical details nor an exploit are publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 172203 (SUSE Enterprise Linux Security Update for dovecot22 (SUSE-SU-2019:0900-1)).

Upgrading to version 2.2.36.3 or 2.3.5.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107672†). The entry VDB-132543 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Mail Server Software

Name

Dovecot

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector (MITRE): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Dovecot 2.2.36.3/2.3.5.1

Timelineinfo

02/06/2019 🔍
03/28/2019 +50 days 🔍
03/28/2019 +0 days 🔍
03/29/2019 +1 days 🔍
04/02/2019 +4 days 🔍
08/17/2023 +1598 days 🔍

Sourcesinfo

Advisory: USN-3928-1
Researcher: Aki Tuomi
Status: Confirmed

CVE: CVE-2019-7524 (🔍)
GCVE (CVE): GCVE-0-2019-7524
GCVE (VulDB): GCVE-100-132597
SecurityFocus: 107672 - Dovecot CVE-2019-7524 Stack Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 03/29/2019 06:47
Updated: 08/17/2023 15:35
Changes: 03/29/2019 06:47 (61), 05/22/2020 18:10 (4), 08/17/2023 15:30 (4), 08/17/2023 15:35 (12)
Complete: 🔍
Cache ID: 216::103

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