While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread.
While parsing an IPAddressFamily extension in an X.509 certificate, it is possible to do a one-byte overread. This would result in an incorrect text display of the certificate. This bug has been present since 2006 and is present in all versions of OpenSSL before 1.0.2m and 1.1.0g.
- Published
- Aug 28, 2017
- Updated
- Jun 16, 2026
- EPSS
- 21.0% · 97th percentile
- CWE
- CWE-119
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 6 / 30 · 21.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux8.0
- debian debian linux9.0
- openssl openssl0.9.7j
- openssl openssl0.9.7k
- openssl openssl0.9.7l
- openssl openssl0.9.7m
- openssl openssl0.9.8
- openssl openssl0.9.8a
- openssl openssl0.9.8b
- openssl openssl0.9.8c
- openssl openssl0.9.8d
- openssl openssl0.9.8e
- openssl openssl0.9.8f
- openssl openssl0.9.8g
- openssl openssl0.9.8h
- openssl openssl0.9.8i
- openssl openssl0.9.8j
- openssl openssl0.9.8k
- openssl openssl0.9.8l
- openssl openssl0.9.8m
Versions reported by the vendor
Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.
OpenSSL Software Foundation OpenSSL
- 1.1.0, 1.0.2affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.3 | openssl | before 1.0.2m-r0 | 1.0.2m-r0 |
| Debian:12 | openssl | before 1.1.0g-1 | 1.1.0g-1 |
| Debian:7 | openssl | before 1.0.1t-1+deb7u3 | 1.0.1t-1+deb7u3 |
| Debian:8 | openssl | before 1.0.1t-1+deb8u7 | 1.0.1t-1+deb8u7 |
| Debian:9 | openssl | before 1.1.0f-3+deb9u1 | 1.1.0f-3+deb9u1 |
| Debian:9 | openssl1.0 | before 1.0.2l-2+deb9u1 | 1.0.2l-2+deb9u1 |
| openSUSE:Tumbleweed | openssl-1_0_0 | before 1.0.2u-6.2 | 1.0.2u-6.2 |
| Red Hat:enterprise_linux:7::client | openssl | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| Red Hat:enterprise_linux:7::client | openssl-debuginfo | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| Red Hat:enterprise_linux:7::client | openssl-devel | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| Red Hat:enterprise_linux:7::client | openssl-libs | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| Red Hat:enterprise_linux:7::client | openssl-perl | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| Red Hat:enterprise_linux:7::client | openssl-static | before 1:1.0.2k-16.el7 | 1:1.0.2k-16.el7 |
| SUSE:Linux Enterprise Desktop 12 SP2 | openssl | before 1.0.2j-60.16.1 | 1.0.2j-60.16.1 |
| SUSE:Linux Enterprise Module for Web and Scripting 12 | nodejs4 | before 4.8.7-15.8.1 | 4.8.7-15.8.1 |
| SUSE:Linux Enterprise Server 11-SECURITY | openssl1 | before 1.0.1g-0.58.3.1 | 1.0.1g-0.58.3.1 |
| SUSE:Linux Enterprise Server 12-LTSS | openssl | before 1.0.1i-27.28.1 | 1.0.1i-27.28.1 |
| SUSE:OpenStack Cloud 6 | openssl | before 1.0.1i-54.8.1 | 1.0.1i-54.8.1 |
| SUSE:OpenStack Cloud 7 | nodejs6 | before 6.12.2-11.8.1 | 6.12.2-11.8.1 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:openssl | 1.0.2m-r0 · Alpine:v3.3 | Package registry (OSV) |
| debian:openssl | 1.1.0g-1 · Debian:12 | Package registry (OSV) |
| debian:openssl1.0 | 1.0.2l-2+deb9u1 · Debian:9 | Package registry (OSV) |
| opensuse:openssl-1_0_0 | 1.0.2u-6.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:openssl | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-debuginfo | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-devel | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-libs | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-perl | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:openssl-static | 1:1.0.2k-16.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:nodejs4 | 4.8.7-15.8.1 · SUSE:Linux Enterprise Module for Web and Scripting 12 | Package registry (OSV) |
| suse:nodejs6 | 6.12.2-11.8.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:openssl | 1.0.1i-54.8.1 · SUSE:OpenStack Cloud 6 | Package registry (OSV) |
| suse:openssl1 | 1.0.1g-0.58.3.1 · SUSE:Linux Enterprise Server 11-SECURITY | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- www.securityfocus.com/bid/100515
- www.securitytracker.com/id/1039726
- access.redhat.com/errata/RHSA-2018:3221
- access.redhat.com/errata/RHSA-2018:3505
- cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- github.com/openssl/openssl/commit/068b963bb7afc57f5bdd723de0dd15e7795d5822
- lists.debian.org/debian-lts-announce/2017/11/msg00011.html
- security.FreeBSD.org/advisories/FreeBSD-SA-17:11.openssl.asc
- security.gentoo.org/glsa/201712-03
- security.netapp.com/advisory/ntap-20170927-0001/
- security.netapp.com/advisory/ntap-20171107-0002/
- support.apple.com/HT208331
- usn.ubuntu.com/3611-2/
- www.debian.org/security/2017/dsa-4017
- www.debian.org/security/2017/dsa-4018
- www.openssl.org/news/secadv/20170828.txt
Vendor advisories and official records. Exploit/PoC links are deliberately left out.