Varnish Cache up to 4.1.8/5.2.0 cache_fetch.c vbf_stp_error memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.1 | $0-$5k | 0.00 |
A vulnerability was found in Varnish Cache up to 4.1.8/5.2.0. It has been rated as problematic. Affected by this issue is the function vbf_stp_error
of the file bin/varnishd/cache/cache_fetch.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality. CVE summarizes:
vbf_stp_error in bin/varnishd/cache/cache_fetch.c in Varnish HTTP Cache 4.1.x before 4.1.9 and 5.x before 5.2.1 allows remote attackers to obtain sensitive information from process memory because a VFP_GetStorage buffer is larger than intended in certain circumstances involving -sfile Stevedore transient objects.
The bug was discovered 11/15/2017. The weakness was shared 11/16/2017 (Website). The advisory is shared for download at debian.org. This vulnerability is handled as CVE-2017-8807 since 05/07/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.
The vulnerability scanner Nessus provides a plugin with the ID 104794 (Fedora 26 : varnish (2017-5525b6cb5a)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277042 (Fedora Security Update for varnish (FEDORA-2017-5525b6cb5a)).
Upgrading to version 4.1.9 or 5.2.1 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (104794).
Product
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: 7.2VulDB Meta Temp Score: 7.1
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.1
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: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
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: 104794
Nessus Name: Fedora 26 : varnish (2017-5525b6cb5a)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 56267
OpenVAS Name: Debian Security Advisory DSA 4034-1 (varnish - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: Cache 4.1.9/5.2.1
Patch: github.com
Timeline
05/07/2017 🔍11/15/2017 🔍
11/15/2017 🔍
11/15/2017 🔍
11/16/2017 🔍
11/16/2017 🔍
11/27/2017 🔍
11/28/2017 🔍
01/10/2023 🔍
Sources
Advisory: FEDORA-2017-5525b6cb5aStatus: Not defined
Confirmation: 🔍
CVE: CVE-2017-8807 (🔍)
OVAL: 🔍
SecurityFocus: 101886 - Varnish Cache CVE-2017-8807 Information Disclosure Vulnerability
Entry
Created: 11/16/2017 17:48Updated: 01/10/2023 14:44
Changes: 11/16/2017 17:48 (77), 12/07/2019 09:33 (4), 08/11/2022 10:31 (4), 01/10/2023 14:39 (3), 01/10/2023 14:42 (1), 01/10/2023 14:44 (1)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.