CVE-2017-8821
In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, an attacker can cause a denial of service (application hang) via crafted PEM input that signifies a public key requiring…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, an attacker can cause a denial of service (application hang) via crafted PEM input that signifies a public key requiring a password, which triggers an attempt by the OpenSSL library to ask the user for the password, aka TROVE-2017-011.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.96% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- tor project/tor · debian/debian linux
- Source
- security@debian.org
References
- https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
- https://bugs.torproject.org/24246Vendor Advisory
- https://www.debian.org/security/2017/dsa-4054Third Party Advisory
- https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
- https://bugs.torproject.org/24246Vendor Advisory
- https://www.debian.org/security/2017/dsa-4054Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.