fetchmail: (verbose mode) Heap overflow by formating byte string into its printable representation
Published Feb 8, 2010
6.8
MEDIUMCVSS 2.0
EPSS 2.49%
Description
The sdump function in sdump.c in fetchmail 6.3.11, 6.3.12, and 6.3.13, when running in verbose mode on platforms for which char is signed, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an SSL X.509 certificate containing non-printable characters with the high bit set, which triggers a heap-based buffer overflow during escaping.
Affected products
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of fetchmail as shipped with Red Hat Enterprise Linux 3, 4, or 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.49% (0.02487) | 84.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.49% (0.02487) | 82.49th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.75% (0.01751) | 81.30th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.64% (0.06643) | 93.73th | v3 (v2023.03.01) |
| Dec 12, 2024 | 9.41% (0.09415) | 94.99th | v3 (v2023.03.01) |
| May 13, 2024 | 10.34% (0.10338) | 94.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.56% (0.11557) | 94.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.47% (0.05470) | 89.98th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.47% (0.05470) | 89.00th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.47% (0.05470) | 76.60th | v2 (v2022.01.01) |
References (12)
- http://mknod.org/svn/fetchmail/branches/BRANCH_6-3/fetchmail-SA-2010-01.txt x_refsource_CONFIRM
- http://osvdb.org/62114 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/38391 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.fetchmail.info/fetchmail-SA-2010-01.txt x_refsource_CONFIRMVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:037 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/38088 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1023543 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2010/0296 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2010-0562 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=561839 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-0562
- https://www.cve.org/CVERecord?id=CVE-2010-0562
| Link | Providers | Tags |
|---|---|---|
| http://mknod.org/svn/fetchmail/branches/BRANCH_6-3/fetchmail-SA-2010-01.txt | x_refsource_CONFIRM | |
| http://osvdb.org/62114 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/38391 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.fetchmail.info/fetchmail-SA-2010-01.txt | x_refsource_CONFIRMVendor Advisory | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2010:037 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.securityfocus.com/bid/38088 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1023543 | vdb-entryx_refsource_SECTRACK | |
| http://www.vupen.com/english/advisories/2010/0296 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2010-0562 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=561839 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2010-0562 | ||
| https://www.cve.org/CVERecord?id=CVE-2010-0562 |
Change history (0)
No recorded changes yet.