Buffer overflow in Swapoff Op

CVE-2008-3229

Stack-based buffer overflow in op before Changeset 563, when xauth support is enabled, allows local users to gain privileges via a long XAUTHORITY environment variable.

Vulnerability class: Buffer Overflow

Published 2008-07-18 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 6.9 (Medium). Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.004 (35.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Swapoff Op — versions 1.1.10, 1.1.19, 1.20

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

exchange.xforce.ibmcloud.com/vulnerabilities/43836 (vdb-entry)
www.securityfocus.com/bid/30226 (vdb-entry)
swapoff.org/changeset/563 (Exploit)
secunia.com/advisories/31103 (third-party-advisory)
www.openwall.com/lists/oss-security/2008/07/12/4 (mailing-list)