CVE-2015-0206
MediumMemory leak in the dtls1_buffer_record function in d1_pkt.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate records for the next epoch, leading to failure of replay…
Published Jan 9, 2015 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2015-0206, UBUNTU-CVE-2015-0206
Key Facts
Patch immediately- CVE-2015-0206 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Openssl, rootio-openssl, openssl-devel (amazon) and 22 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 57% probability of exploitation in the next 30 days.
- Fixed versions are available, including libcrypto34 2.2.1-2.3.1, libcrypto34-32bit 2.2.1-2.3.1, libcrypto34-debuginfo 2.2.1-2.3.1.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
57%
Higher than 99.0% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2015-0206 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Memory leak in the dtls1_buffer_record function in d1_pkt.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate records for the next epoch, leading to failure of replay detection.
Affected Products
155 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OpensslOpenssl | 1.0.0a, 1.0.0b, 1.0.0c, 1.0.0d, 1.0.0e, 1.0.0f, 1.0.0g, 1.0.0h | 1.0.1k-1 |
| rootio-opensslrootio | See advisory | 1.0.1k-1 |
| openssl-develamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
| openssl-perlamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
| openssl-staticamazon | See advisory | 1:1.0.1k-1.82.amzn1 |
Patched Releases
libcrypto34
2.2.1-2.3.1
libcrypto34-32bit
2.2.1-2.3.1
libcrypto34-debuginfo
2.2.1-2.3.1
libcrypto34-debuginfo-32bit
2.2.1-2.3.1
libcrypto38
2.5.0-1.1
libcrypto38-32bit
2.5.0-1.1
libmysql55client_r18
5.5.39-0.7.1
libmysql55client_r18-32bit
5.5.39-0.7.1
libmysql55client_r18-x86
5.5.39-0.7.1
libmysql55client18
5.5.39-0.7.1
libmysql55client18-32bit
5.5.39-0.7.1
libmysql55client18-x86
5.5.39-0.7.1
libmysqlclient_r15
5.0.96-0.6.13
libmysqlclient_r15-32bit
5.0.96-0.6.13
libmysqlclient_r15-x86
5.0.96-0.6.13
libmysqlclient15
5.0.96-0.6.13
libmysqlclient15-32bit
5.0.96-0.6.13
libmysqlclient15-x86
5.0.96-0.6.13
libopenssl-1_1-devel
1.1.1l-1.2
libopenssl-1_1-devel-32bit
1.1.1l-1.2
libopenssl-devel
1.0.2j-2.2
libopenssl-devel-32bit
1.0.2j-2.2
libopenssl1_0_0
1.0.1g-0.22.1, 1.0.2j-2.2
libopenssl1_0_0-32bit
1.0.1g-0.22.1, 1.0.2j-2.2
libopenssl1_0_0-hmac
1.0.2j-2.2
Timeline
Publicly disclosed
Jan 9, 2015
Last updated
Aug 4, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-401 Missing Release of Memory after Effective Lifetime
References
- advisoryRHSA-2015:0066
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2015-0206
- advisoryhttps://ubuntu.com/security/CVE-2014-3570
- advisoryhttps://ubuntu.com/security/CVE-2014-3571
- advisoryhttps://ubuntu.com/security/CVE-2014-3572
FAQ
Common Questions.
Memory leak in the dtls1_buffer_record function in d1_pkt.c in OpenSSL 1.0.0 before 1.0.0p and 1.0.1 before 1.0.1k allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate records for the next epoch, leading to failure of replay detection.
Affected: Openssl versions 1.0.0a, 1.0.0b, 1.0.0c, 1.0.0d, 1.0.0e, 1.0.0f, 1.0.0g, 1.0.0h; rootio-openssl; openssl-devel (amazon), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including libcrypto34 2.2.1-2.3.1, libcrypto34-32bit 2.2.1-2.3.1, libcrypto34-debuginfo 2.2.1-2.3.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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