CVE-2019-10013
The asn1_signature function in asn1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow that allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted certificate in the TLS certificate handshake…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The asn1_signature function in asn1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow that allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted certificate in the TLS certificate handshake message, because the result of get_asn1_length() is not checked for a minimum or maximum size.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.91% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- axtls project/axtls
- Source
- cve@mitre.org
References
- http://axtls.sourceforge.netVendor Advisory
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- https://seclists.org/bugtraq/2019/Nov/44
- https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
- https://www.telekom.com/resource/blob/586416/12097aeb8f9a6bba89a804b94575521a/dl-191121-critical-remote-denial-of-service-vulnerability-i--data.pdf
- http://axtls.sourceforge.netVendor Advisory
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- https://seclists.org/bugtraq/2019/Nov/44
- https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
- https://www.telekom.com/resource/blob/586416/12097aeb8f9a6bba89a804b94575521a/dl-191121-critical-remote-denial-of-service-vulnerability-i--data.pdf
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.