FreeBSD up to 11.2 on 64-bit ICMP Reply Packet out-of-bounds write
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.4 | $0-$5k | 0.00 |
A vulnerability was found in FreeBSD up to 11.2 on 64-bit (Operating System). It has been classified as problematic. This affects an unknown functionality of the component ICMP Reply Handler. The manipulation as part of a Packet leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:
In FreeBSD before 11.2-STABLE(r340268) and 11.2-RELEASE-p5, due to incorrectly accounting for padding on 64-bit platforms, a buffer underwrite could occur when constructing an ICMP reply packet when using a non-standard value for the net.inet.icmp.quotelen sysctl.
The bug was discovered 11/27/2018. The weakness was published 11/28/2018 (Website). It is possible to read the advisory at security.freebsd.org. This vulnerability is uniquely identified as CVE-2018-17156 since 09/18/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.
Upgrading to version 11.2-STABLE(r340268) or 11.2-RELEASE-p5 eliminates this vulnerability.
Product
Type
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: 5.6VulDB Meta Temp Score: 5.5
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.9
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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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: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
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 |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: FreeBSD 11.2-STABLE(r340268)/11.2-RELEASE-p5
Timeline
09/18/2018 🔍11/27/2018 🔍
11/28/2018 🔍
11/28/2018 🔍
11/28/2018 🔍
11/29/2018 🔍
04/16/2020 🔍
Sources
Product: freebsd.orgAdvisory: security.freebsd.org
Status: Not defined
Confirmation: 🔍
CVE: CVE-2018-17156 (🔍)
SecurityFocus: 106052 - FreeBSD CVE-2018-17156 Denial Of Service Vulnerability
Entry
Created: 11/29/2018 07:53Updated: 04/16/2020 06:40
Changes: 11/29/2018 07:53 (62), 04/16/2020 06:40 (4)
Complete: 🔍
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