CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.6 | $0-$5k | 0.00 |
A vulnerability was found in Nettle 3.1. It has been rated as very critical. This issue affects the function ecc_256_modp
of the file ecc-256.c. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. The summary by CVE is:
The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8805.
The weakness was released 02/23/2016 (Website). It is possible to read the advisory at lists.lysator.liu.se. The identification of this vulnerability is CVE-2015-8803 since 02/01/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/08/2022). The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.
The vulnerability scanner Nessus provides a plugin with the ID 88771 (openSUSE Security Update : libnettle (openSUSE-2016-211)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157291 (Oracle Enterprise Linux Security Update for nettle (ELSA-2016-2582)).
Upgrading to version 3.2 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at Tenable (88771) and Vulnerability Center (SBV-56869†). Entries connected to this vulnerability are available at VDB-81072 and VDB-81073.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 9.8VulDB Meta Temp Score: 9.6
VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
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: 7pk securityCWE: CWE-254
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 |
Nessus ID: 88771
Nessus Name: openSUSE Security Update : libnettle (openSUSE-2016-211)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 867773
OpenVAS Name: Fedora Update for compat-nettle27 FEDORA-2016-d94300845b
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Nettle 3.2
Patch: git.lysator.liu.se
Timeline
02/01/2016 🔍02/09/2016 🔍
02/15/2016 🔍
02/16/2016 🔍
02/23/2016 🔍
02/23/2016 🔍
02/24/2016 🔍
03/01/2016 🔍
07/08/2022 🔍
Sources
Advisory: USN-2897-1Status: Not defined
Confirmation: 🔍
CVE: CVE-2015-8803 (🔍)
Vulnerability Center: 56869 - Nettle before 3.2 Local Unspecified Vulnerability in ecc-256.c - CVE-2015-8803, Medium
See also: 🔍
Entry
Created: 02/24/2016 09:28 AMUpdated: 07/08/2022 01:07 PM
Changes: 02/24/2016 09:28 AM (65), 08/24/2018 09:26 AM (15), 07/08/2022 01:00 PM (5), 07/08/2022 01:07 PM (1)
Complete: 🔍
Cache ID: 18:2A6:40
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