GNU Libtasn1 4.12/4.13 _asn1_expand_object_id resource management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.4 | $0-$5k | 0.00 |
A vulnerability was found in GNU Libtasn1 4.12/4.13. It has been declared as problematic. This vulnerability affects the function _asn1_expand_object_id
. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:
GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
The bug was discovered 08/14/2018. The weakness was disclosed 08/20/2018 (Website). The advisory is available at gitlab.com. This vulnerability was named CVE-2018-1000654 since 08/20/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.
The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172420 (SUSE Enterprise Linux Security Update for libtasn1 (SUSE-SU-2019:1379-1)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The entry 101619 is pretty similar.
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: 4.4VulDB Meta Temp Score: 4.4
VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.5
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: Resource managementCWE: CWE-399 / CWE-404
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 |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
08/12/2018 🔍08/14/2018 🔍
08/20/2018 🔍
08/20/2018 🔍
08/20/2018 🔍
08/21/2018 🔍
03/17/2020 🔍
Sources
Vendor: gnu.orgAdvisory: gitlab.com
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2018-1000654 (🔍)
SecurityFocus: 105151 - GNU Libtasn1 CVE-2018-1000654 Denial of Service Vulnerability
See also: 🔍
Entry
Created: 08/21/2018 07:28Updated: 03/17/2020 08:53
Changes: 08/21/2018 07:28 (61), 03/17/2020 08:53 (4)
Complete: 🔍
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