# CVE-2015-2730: Weak cryptography in n/a > Remote attackers can spoof ECDSA signatures due to improper ECC multiplication in the NSS library, affecting Firefox and other products. - **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 6 Jul 2015 - **Updated:** 6 Aug 2024 - **Also known as:** DEBIAN-CVE-2015-2730, GHSA-85fg-8m94-wc2q, RHSA-2015:1699, UBUNTU-CVE-2015-2730 ## What is CVE-2015-2730? CVE-2015-2730 is a medium-severity vulnerability in Debian Debian Linux, published on 6 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description Mozilla Network Security Services (NSS) before 3.19.1, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, and other products, does not properly perform Elliptical Curve Cryptography (ECC) multiplications, which makes it easier for remote attackers to spoof ECDSA signatures via unspecified vectors. Weakness: CWE-310 ## Which versions are affected by CVE-2015-2730? It affects 7 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `nss-softokn` | Red Hat:enterprise_linux:6::client | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:6::client | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:6::client | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:6::client | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn` | Red Hat:enterprise_linux:6::computenode | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:6::computenode | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:6::computenode | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:6::computenode | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn` | Red Hat:enterprise_linux:6::server | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:6::server | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:6::server | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:6::server | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn` | Red Hat:enterprise_linux:6::workstation | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:6::workstation | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-devel` | Red Hat:enterprise_linux:6::workstation | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:6::workstation | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:6::workstation | All versions | 0:3.14.3-23.el6_7 | | `nss-softokn` | Red Hat:enterprise_linux:7::client | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:7::client | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:7::client | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:7::client | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:7::computenode | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn` | Red Hat:enterprise_linux:7::server | All versions | 0:3.16.2.3-13.ael7b_1 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:7::server | All versions | 0:3.16.2.3-13.ael7b_1 | | `nss-softokn-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:3.16.2.3-13.ael7b_1 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:7::server | All versions | 0:3.16.2.3-13.ael7b_1 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:7::server | All versions | 0:3.16.2.3-13.ael7b_1 | | `nss-softokn` | Red Hat:enterprise_linux:7::workstation | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-debuginfo` | Red Hat:enterprise_linux:7::workstation | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl` | Red Hat:enterprise_linux:7::workstation | All versions | 0:3.16.2.3-13.el7_1 | | `nss-softokn-freebl-devel` | Red Hat:enterprise_linux:7::workstation | All versions | 0:3.16.2.3-13.el7_1 | Products: Debian Debian Linux, Mozilla Network Security Services, Novell Suse Linux Enterprise Desktop, Novell Suse Linux Enterprise Server, Novell Suse Linux Enterprise Software Development Kit, Oracle Solaris, Oracle Vm Server. ## How do I fix CVE-2015-2730? Upgrade to a fixed version. ## Is CVE-2015-2730 being exploited? There is no known exploitation of CVE-2015-2730 in the wild and no public exploit code. ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2015-2730 and fix it if it is affected. What it is: CVE-2015-2730 is a medium-severity vulnerability in Debian Debian Linux, published on 6 Jul 2015. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2015-2730 in the wild and no public exploit code. Affected product: Debian Debian Linux. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2015-2730/ (Markdown: https://insights.sbomify.com/CVE-2015-2730/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2015-2730 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-2730 - OSV: https://osv.dev/vulnerability/CVE-2015-2730 --- From sbomify Insights: https://insights.sbomify.com/CVE-2015-2730/ Summaries are generated and may contain mistakes; the official description above is the record.