CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.7 | $0-$5k | 0.00 |
A vulnerability classified as problematic was found in Opera Web Browser (Web Browser) (the affected version unknown). Affected by this vulnerability is an unknown part of the component HTTPS Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (HEIST). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:
The HTTPS protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
The weakness was disclosed 08/03/2016 by Mathy Vanhoef and Tom Van Goethem with iMinds-DistriNet as HEIST: HTTP Encrypted Information can be Stolen through TCP-windows as confirmed paper (Blackhat). The advisory is shared at blackhat.com. The public release happened without involvement of Opera. This vulnerability is known as CVE-2016-7152 since 09/06/2016. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/15/2022). MITRE ATT&CK project uses the attack technique T1592 for this issue. Due to its background and reception, this vulnerability has a historic impact.
The best possible mitigation is suggested to be Workaround.
Additional details are provided at arstechnica.com. The entries 91292, 91293, 91294 and 91295 are pretty similar.
Product
Type
Vendor
Name
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: 4.8VulDB Meta Temp Score: 4.7
VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.3
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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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
Name: HEISTClass: Information disclosure / HEIST
CWE: CWE-200 / CWE-284 / CWE-266
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: WorkaroundStatus: 🔍
0-Day Time: 🔍
Timeline
08/03/2016 🔍09/06/2016 🔍
09/06/2016 🔍
09/06/2016 🔍
09/07/2016 🔍
09/15/2022 🔍
Sources
Vendor: opera.comAdvisory: HEIST: HTTP Encrypted Information can be Stolen through TCP-windows
Researcher: Mathy Vanhoef, Tom Van Goethem
Organization: iMinds-DistriNet
Status: Confirmed
CVE: CVE-2016-7152 (🔍)
SecurityTracker: 1036741
SecurityFocus: 92769 - HTTPS CVE-2016-7152 Information Disclosure Vulnerability
Misc.: 🔍
See also: 🔍
Entry
Created: 09/07/2016 11:07Updated: 09/15/2022 07:37
Changes: 09/07/2016 11:07 (53), 04/22/2019 10:53 (9), 09/15/2022 07:31 (2), 09/15/2022 07:37 (11)
Complete: 🔍
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