Memory leak in tor (Alpine package)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-10593 |
| CWE-ID | CWE-401 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
tor (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Memory leak
EUVDB-ID: #VU26506
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-10593
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak in "circpad_setup_machine_on_circ" because a circuit-padding machine can be negotiated twice on the same circuit. A remote attacker can cause a denial of service condition on the target system.
MitigationInstall update from vendor's website.
Vulnerable software versionstor (Alpine package): 0.3.5.8-r0 - 0.4.1.7-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=f9e3cf1b2b6a6d6dcf9332ebca68b4e167276d48
http://git.alpinelinux.org/aports/commit/?id=d973662f3bf606989062d74e804a02b7c64a205a
http://git.alpinelinux.org/aports/commit/?id=2185d3b8d25a0f2e63d09e74b9c29683ef41bc2d
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
