QEMU 3.0.0 slirp/tcp_subr.c tcp_emu memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in QEMU 3.0.0. Affected by this vulnerability is the function tcp_emu of the file slirp/tcp_subr.c. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2019-6778. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in QEMU 3.0.0 (Virtualization Software). This affects the function tcp_emu of the file slirp/tcp_subr.c. 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 QEMU 3.0.0, tcp_emu in slirp/tcp_subr.c has a heap-based buffer overflow.

The bug was discovered 01/24/2019. The weakness was presented 03/21/2019 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2019-6778 since 01/24/2019. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/26/2024).

The vulnerability was handled as a non-public zero-day exploit for at least 56 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 209571 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172079 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2019:0435-1)).

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 databases at Tenable (209571) and SecurityFocus (BID 106007†). See VDB-127968, VDB-127970, VDB-131004 and VDB-131908 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍

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Nessus ID: 209571
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2024-12792)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/22/2018 🔍
01/24/2019 +63 days 🔍
01/24/2019 +0 days 🔍
03/21/2019 +56 days 🔍
03/22/2019 +1 days 🔍
10/26/2024 +2045 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: RHSA-2019:1883⛔
Status: Confirmed

CVE: CVE-2019-6778 (🔍)
GCVE (CVE): GCVE-0-2019-6778
GCVE (VulDB): GCVE-100-132033
SecurityFocus: 106007 - QEMU CVE-2018-19489 Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 03/22/2019 08:49
Updated: 10/26/2024 22:07
Changes: 03/22/2019 08:49 (60), 05/18/2020 17:14 (4), 08/04/2023 08:51 (3), 10/26/2024 22:07 (16)
Complete: 🔍
Cache ID: 216::103

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

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