CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.0 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, has been found in Libtasn1 up to 4.3. This issue affects the function asn1_der_decoding
. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The software 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, integrity, and availability. The summary by CVE is:
Stack-based buffer overflow in asn1_der_decoding in libtasn1 before 4.4 allows remote attackers to have unspecified impact via unknown vectors.
The weakness was presented 04/10/2015 (Website). It is possible to read the advisory at gnu.org. The identification of this vulnerability is CVE-2015-2806 since 03/30/2015. 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 vulnerability scanner Nessus provides a plugin with the ID 82953 (Fedora 22 : mingw-gnutls-3.3.14-1.fc22 / mingw-libtasn1-4.4-1.fc22 (2015-5308)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 296002 (Solaris 11.3 Support Repository Update (SRU) 9.4.0 Missing).
Upgrading to version 4.4 eliminates this vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (82953). See 78889, 80607, 80673 and 80674 for similar entries.
Product
Name
CPE 2.3
CPE 2.2
CVSSv3
VulDB Meta Base Score: 7.3VulDB Meta Temp Score: 7.0
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
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: 82953
Nessus Name: Fedora 22 : mingw-gnutls-3.3.14-1.fc22 / mingw-libtasn1-4.4-1.fc22 (2015-5308)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍
OpenVAS ID: 100675
OpenVAS Name: Fedora Update for libtasn1 FEDORA-2015-5199
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Libtasn1 4.4
Patch: 4d4f992826a4962790ecd0cce6fbba4a415ce149
Timeline
03/30/2015 🔍03/30/2015 🔍
04/08/2015 🔍
04/10/2015 🔍
04/10/2015 🔍
04/11/2015 🔍
04/11/2015 🔍
04/21/2015 🔍
04/22/2015 🔍
05/03/2022 🔍
Sources
Advisory: RHSA-2017:1860Status: Confirmed
Confirmation: 🔍
CVE: CVE-2015-2806 (🔍)
OVAL: 🔍
SecurityTracker: 1032080 - libtASN1 Stack Overflow in asn1_ltostr() May Let Users Deny Service or Execute Arbitrary Code
Vulnerability Center: 49824 - libtasn1 before 4.4 Remote Code Execution in asn1_der_decoding, Critical
SecurityFocus: 73436 - GNU Libtasn1 'parser_aux.c' Stack Based Buffer Overflow Vulnerability
See also: 🔍
Entry
Created: 04/12/2015 01:47 AMUpdated: 05/03/2022 06:03 PM
Changes: 04/12/2015 01:47 AM (68), 06/27/2017 03:22 AM (9), 05/03/2022 05:56 PM (5), 05/03/2022 06:03 PM (1)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.