The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The ADDW macro in stdio-common/vfscanf.c in the GNU C Library (aka glibc or libc6) before 2.21 does not properly consider data-type size during a risk-management decision for use of the alloca function, which might allow context-dependent attackers to cause a denial of service (segmentation violation) or overwrite memory locations beyond the stack boundary via a long line containing wide characters that are improperly handled in a wscanf call.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:* | 10.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* | 12.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* | 14.10 | Vulnerable | Canonical |
| cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* | up to 2.20 | Vulnerable | GNU |
- cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:* Versions 10.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:* Versions 14.10 Vulnerable ·Canonical
- cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* Versions up to 2.20 Vulnerable ·GNU
Remediation
Red Hat 2 advisories
- RHSA-2015:2589 Released 2015-12-09 · Red Hat rating Importantglibc security update
- Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) glibc-2.17-79.el7_1, glibc-common-2.17-79.el7_1, glibc-devel-2.17-79.el7_1 +3
- Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) glibc-static-2.17-79.el7_1
- Red Hat Enterprise Linux Server EUS (v. 7.1) glibc-2.17-79.ael7b_1, glibc-2.17-79.el7_1, glibc-2.17-79.el7_1.ppc +11
- Red Hat Enterprise Linux Server Optional EUS (v. 7.1) glibc-static-2.17-79.ael7b_1, glibc-static-2.17-79.el7_1, glibc-static-2.17-79.el7_1.ppc
- RHSA-2015:2199 Released 2015-11-19 · Red Hat rating Moderateglibc security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) glibc-2.17-105.el7, glibc-common-2.17-105.el7, glibc-devel-2.17-105.el7 +3
- Red Hat Enterprise Linux Client Optional (v. 7) glibc-static-2.17-105.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) glibc-2.17-105.el7, glibc-common-2.17-105.el7, glibc-devel-2.17-105.el7 +3
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) glibc-static-2.17-105.el7
- Red Hat Enterprise Linux Server (v. 7) glibc-2.17-105.el7, glibc-2.17-105.el7.ppc, glibc-common-2.17-105.el7 +5
- Red Hat Enterprise Linux Server Optional (v. 7) glibc-static-2.17-105.el7, glibc-static-2.17-105.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) glibc-2.17-105.el7, glibc-common-2.17-105.el7, glibc-devel-2.17-105.el7 +3
- Red Hat Enterprise Linux Workstation Optional (v. 7) glibc-static-2.17-105.el7
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux ComputeNode EUS (v. 7.1) | Fixed | RHSA-2015:2589 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.1) | Fixed | RHSA-2015:2589 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux Server EUS (v. 7.1) | Fixed | RHSA-2015:2589 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux Server Optional EUS (v. 7.1) | Fixed | RHSA-2015:2589 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:2199 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2015:2199 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-1473
- 2026-10-03 Alias added: GHSA-jx9c-49v7-hj5h
References
Sources
- CVE-2015-1473 · CVE Program
- CVE-2015-1473 · NVD
- FIRST EPSS
- GHSA-jx9c-49v7-hj5h · GitHub Advisory Database · CC BY 4.0
- CVE-2015-1473 · Red Hat security data · CC BY 4.0
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