CVE-2011-1020 EXPLOIT
4.6
MEDIUM · CVSS 2.0 · EPSS 0.9% (pctl 59)
Patch early
A public exploit exists.
Description
The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.
Scoring
| CVSS | 4.6 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 0.92% — more likely to be exploited than 59% of all CVEs |
| Weakness | CWE-200 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2011-02-28 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| linux | linux kernel |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel 2.6.32 (Ubuntu 10.04) - '/proc' Handling SUID Privilege Escalation | 2011-01-17 |
References
- http://openwall.com/lists/oss-security/2011/02/24/18
- http://openwall.com/lists/oss-security/2011/02/25/2
- http://seclists.org/fulldisclosure/2011/Jan/421
- http://secunia.com/advisories/43496
- http://securityreason.com/securityalert/8107
- http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/
- http://www.securityfocus.com/bid/46567
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65693
- https://lkml.org/lkml/2011/2/10/21
- https://lkml.org/lkml/2011/2/7/368
- https://lkml.org/lkml/2011/2/7/404
- https://lkml.org/lkml/2011/2/7/414
- https://lkml.org/lkml/2011/2/7/466
- https://lkml.org/lkml/2011/2/7/474
- https://lkml.org/lkml/2011/2/9/417
- http://openwall.com/lists/oss-security/2011/02/24/18
- http://openwall.com/lists/oss-security/2011/02/25/2
- http://seclists.org/fulldisclosure/2011/Jan/421
- http://secunia.com/advisories/43496
- http://securityreason.com/securityalert/8107
→ the Explorer · watch your stack · NVD