Linux Kernel up to 4.20.11 SNMP NAT Module nf_nat_snmp_basic_main.c array index
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.4 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.20.11 (Operating System). This issue affects an unknown code block of the file net/ipv4/netfilter/nf_nat_snmp_basic_main.c of the component SNMP NAT Module. The manipulation with an unknown input leads to a array index vulnerability. Using CWE to declare the problem leads to CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
In the Linux kernel before 4.20.12, net/ipv4/netfilter/nf_nat_snmp_basic_main.c in the SNMP NAT module has insufficient ASN.1 length checks (aka an array index error), making out-of-bounds read and write operations possible, leading to an OOPS or local privilege escalation. This affects snmp_version and snmp_helper.
The bug was discovered 02/06/2019. The weakness was presented 02/25/2019 by Felix Wilhelm (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2019-9162 since 02/25/2019. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Technical details are known, but no exploit is available.
The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277743 (Fedora Security Update for kernel kernel-headers (FEDORA-2019-7462acf8ba)).
Upgrading to version 4.20.12 eliminates this vulnerability.
See 120204, 127742, 131067 and 131104 for similar entries.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.5VulDB Meta Temp Score: 6.4
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.8
NVD Vector: 🔍
CVSSv2
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: 🔍
Exploiting
Class: Array indexCWE: CWE-129 / CWE-119
ATT&CK: Unknown
Local: Yes
Remote: No
Availability: 🔍
Status: Proof-of-Concept
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 4.20.12
Patch: git.kernel.org
Timeline
02/06/2019 🔍02/07/2019 🔍
02/25/2019 🔍
02/25/2019 🔍
02/26/2019 🔍
07/19/2023 🔍
Sources
Vendor: kernel.orgAdvisory: K31864522⛔
Researcher: Felix Wilhelm
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2019-9162 (🔍)
SecurityFocus: 106963 - Linux Kernel CVE-2019-7222 Local Information Disclosure Vulnerability
See also: 🔍
Entry
Created: 02/26/2019 08:51Updated: 07/19/2023 17:41
Changes: 02/26/2019 08:51 (65), 05/12/2020 21:30 (6), 07/19/2023 17:34 (6), 07/19/2023 17:41 (1)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.