CVE-2017-2784: arm mbed_tls Improper Certificate Validation
Vulnerability summary
CVE-2017-2784 is a high (CVSS 8.1) Improper Certificate Validation vulnerability in arm mbed_tls. EPSS estimates a 3.42% chance of exploitation in the next 30 days, higher than 88.7% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 20-04-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed by mbed TLS library, can cause an invalid free of a stack pointer leading to a potential remote code execution. In order to exploit this vulnerability, an attacker can act as either a client or a server on a network to deliver malicious x509 certificates to vulnerable applications.
CVSS metrics
6 scores · 5 sources · 2 versions- NVDNIST8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · AlpineEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
3.42%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
0.00 pp
From 3.42% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- mbedtls< 2.4.2-r0
Arm1 product
- mbed_tls2.4.0
Debian1 product
- mbedtls< 2.4.2-1
Mageia1 product
- mbedtls< 1.3.19-1.mga5
Suse1 product
- mbedtls&distro=SUSE Package Hub 12< 1.3.19-5.1
Trustedfirmware1 product
- mbed_tls≤ 1.3.18 | 2.0.0 | 2.1.0 | 2.1.1 | 2.1.2 | 2.1.3 | 2.1.4 | 2.1.5 | 2.1.6 | 2.4.0
Ubuntu1 product
- mbedtls< 2.2.1-2ubuntu0.1
7 vendors · 7 products
References
15 links- www.talosintelligence.com/reports/TALOS-2017-0274/X Refsource MISCExploitTechnical DescriptionThird Party AdvisoryVDB Entry
- tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01X Refsource CONFIRMMitigationVendor AdvisoryAdvisoryREPORT
- lists.opensuse.org/archives/…Advisory
Show all 15 references
- lists.opensuse.org/archives/…Advisory
