CVE-2015-5673

Severity: medium (CVSS 6.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-11-04 · updated 2026-06-17
Weakness: CWE-78

Description

eventapp/lib/gcloud.rb in the ISUCON5 qualifier portal (aka eventapp) web application before 2015-10-30 makes improper popen calls, which allows remote attackers to execute arbitrary commands via an HTTP request that includes shell metacharacters in an argument to a "gcloud compute" command.

Affected products

Isucon 5 Qualifier Eventapp: all versions

References

http://jvn.jp/en/jp/JVN04281281/index.html
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000175
https://github.com/isucon/isucon5-qualify/commit/150e3e6d851acb31a0b15ce93380a7dab14203fa
https://github.com/isucon/isucon5-qualify/pull/5
http://jvn.jp/en/jp/JVN04281281/index.html
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000175
https://github.com/isucon/isucon5-qualify/commit/150e3e6d851acb31a0b15ce93380a7dab14203fa
https://github.com/isucon/isucon5-qualify/pull/5

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