CVE-2015-4000
LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the "Logjam" issue.
El protocolo TLS 1.2 y anteriores, cuando una suite de cifrado DHE_EXPORT está habilitada en un servidor pero no en un cliente, no transporta una elección DHE_EXPORT, lo que permite a atacantes man-in-the-middle realizar ataques de degradación del cifrado mediante la rescritura de un ClientHello con DHE remplazado por DHE_EXPORT y posteriormente la rescritura de un ServerHello con DHE_EXPORT remplazado por DHE, también conocido como el problema 'Logjam'.
A flaw was found in the way the TLS protocol composes the Diffie-Hellman exchange (for both export and non-export grade cipher suites). An attacker could use this flaw to downgrade a DHE connection to use export-grade key sizes, which could then be broken by sufficient pre-computation. This can lead to a passive man-in-the-middle attack in which the attacker is able to decrypt all traffic.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2015-05-15 CVE Reserved
- 2015-05-21 CVE Published
- 2024-08-04 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-310: Cryptographic Issues
- CWE-327: Use of a Broken or Risky Cryptographic Algorithm
CAPEC
References (220)
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html | 2023-02-09 | |
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html | 2023-02-09 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | <= 1.0.1m Search vendor "Openssl" for product "Openssl" and version " <= 1.0.1m" | - |
Affected
| in | Hp Search vendor "Hp" | Hp-ux Search vendor "Hp" for product "Hp-ux" | b.11.31 Search vendor "Hp" for product "Hp-ux" and version "b.11.31" | - |
Affected
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Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 1.0.1 <= 1.0.1m Search vendor "Openssl" for product "Openssl" and version " >= 1.0.1 <= 1.0.1m" | - |
Affected
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Openssl Search vendor "Openssl" | Openssl Search vendor "Openssl" for product "Openssl" | >= 1.0.2 <= 1.0.2a Search vendor "Openssl" for product "Openssl" and version " >= 1.0.2 <= 1.0.2a" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.10" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.04" | - |
Affected
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Ibm Search vendor "Ibm" | Content Manager Search vendor "Ibm" for product "Content Manager" | 8.5 Search vendor "Ibm" for product "Content Manager" and version "8.5" | enterprise |
Affected
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Oracle Search vendor "Oracle" | Jrockit Search vendor "Oracle" for product "Jrockit" | r28.3.6 Search vendor "Oracle" for product "Jrockit" and version "r28.3.6" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
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Oracle Search vendor "Oracle" | Jdk Search vendor "Oracle" for product "Jdk" | 1.6.0 Search vendor "Oracle" for product "Jdk" and version "1.6.0" | update95 |
Affected
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Oracle Search vendor "Oracle" | Jdk Search vendor "Oracle" for product "Jdk" | 1.7.0 Search vendor "Oracle" for product "Jdk" and version "1.7.0" | update75 |
Affected
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Oracle Search vendor "Oracle" | Jdk Search vendor "Oracle" for product "Jdk" | 1.7.0 Search vendor "Oracle" for product "Jdk" and version "1.7.0" | update80 |
Affected
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Oracle Search vendor "Oracle" | Jdk Search vendor "Oracle" for product "Jdk" | 1.8.0 Search vendor "Oracle" for product "Jdk" and version "1.8.0" | update_33 |
Affected
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Oracle Search vendor "Oracle" | Jdk Search vendor "Oracle" for product "Jdk" | 1.8.0 Search vendor "Oracle" for product "Jdk" and version "1.8.0" | update45 |
Affected
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Oracle Search vendor "Oracle" | Jre Search vendor "Oracle" for product "Jre" | 1.6.0 Search vendor "Oracle" for product "Jre" and version "1.6.0" | update_95 |
Affected
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Oracle Search vendor "Oracle" | Jre Search vendor "Oracle" for product "Jre" | 1.7.0 Search vendor "Oracle" for product "Jre" and version "1.7.0" | update_75 |
Affected
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Oracle Search vendor "Oracle" | Jre Search vendor "Oracle" for product "Jre" | 1.7.0 Search vendor "Oracle" for product "Jre" and version "1.7.0" | update_80 |
Affected
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Oracle Search vendor "Oracle" | Jre Search vendor "Oracle" for product "Jre" | 1.8.0 Search vendor "Oracle" for product "Jre" and version "1.8.0" | update_33 |
Affected
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Oracle Search vendor "Oracle" | Jre Search vendor "Oracle" for product "Jre" | 1.8.0 Search vendor "Oracle" for product "Jre" and version "1.8.0" | update_45 |
Affected
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Suse Search vendor "Suse" | Linux Enterprise Desktop Search vendor "Suse" for product "Linux Enterprise Desktop" | 12 Search vendor "Suse" for product "Linux Enterprise Desktop" and version "12" | - |
Affected
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Suse Search vendor "Suse" | Linux Enterprise Server Search vendor "Suse" for product "Linux Enterprise Server" | 11.0 Search vendor "Suse" for product "Linux Enterprise Server" and version "11.0" | sp4 |
Affected
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Suse Search vendor "Suse" | Linux Enterprise Software Development Kit Search vendor "Suse" for product "Linux Enterprise Software Development Kit" | 12 Search vendor "Suse" for product "Linux Enterprise Software Development Kit" and version "12" | - |
Affected
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Suse Search vendor "Suse" | Suse Linux Enterprise Server Search vendor "Suse" for product "Suse Linux Enterprise Server" | 12 Search vendor "Suse" for product "Suse Linux Enterprise Server" and version "12" | - |
Affected
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Apple Search vendor "Apple" | Iphone Os Search vendor "Apple" for product "Iphone Os" | <= 8.3 Search vendor "Apple" for product "Iphone Os" and version " <= 8.3" | - |
Affected
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Apple Search vendor "Apple" | Mac Os X Search vendor "Apple" for product "Mac Os X" | <= 10.10.3 Search vendor "Apple" for product "Mac Os X" and version " <= 10.10.3" | - |
Affected
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Mozilla Search vendor "Mozilla" | Network Security Services Search vendor "Mozilla" for product "Network Security Services" | 3.19 Search vendor "Mozilla" for product "Network Security Services" and version "3.19" | - |
Affected
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Oracle Search vendor "Oracle" | Sparc-opl Service Processor Search vendor "Oracle" for product "Sparc-opl Service Processor" | <= 1121 Search vendor "Oracle" for product "Sparc-opl Service Processor" and version " <= 1121" | - |
Affected
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Apple Search vendor "Apple" | Safari Search vendor "Apple" for product "Safari" | - | - |
Affected
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Google Search vendor "Google" | Chrome Search vendor "Google" for product "Chrome" | - | - |
Affected
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Microsoft Search vendor "Microsoft" | Internet Explorer Search vendor "Microsoft" for product "Internet Explorer" | - | - |
Affected
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Mozilla Search vendor "Mozilla" | Firefox Search vendor "Mozilla" for product "Firefox" | - | - |
Affected
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Opera Search vendor "Opera" | Opera Browser Search vendor "Opera" for product "Opera Browser" | - | - |
Affected
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Mozilla Search vendor "Mozilla" | Firefox Search vendor "Mozilla" for product "Firefox" | 39.0 Search vendor "Mozilla" for product "Firefox" and version "39.0" | - |
Affected
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Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | 31.8 Search vendor "Mozilla" for product "Firefox Esr" and version "31.8" | - |
Affected
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Mozilla Search vendor "Mozilla" | Firefox Esr Search vendor "Mozilla" for product "Firefox Esr" | 38.1.0 Search vendor "Mozilla" for product "Firefox Esr" and version "38.1.0" | - |
Affected
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Mozilla Search vendor "Mozilla" | Seamonkey Search vendor "Mozilla" for product "Seamonkey" | 2.35 Search vendor "Mozilla" for product "Seamonkey" and version "2.35" | - |
Affected
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Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | 31.8 Search vendor "Mozilla" for product "Thunderbird" and version "31.8" | - |
Affected
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Mozilla Search vendor "Mozilla" | Thunderbird Search vendor "Mozilla" for product "Thunderbird" | 38.1 Search vendor "Mozilla" for product "Thunderbird" and version "38.1" | - |
Affected
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Mozilla Search vendor "Mozilla" | Firefox Os Search vendor "Mozilla" for product "Firefox Os" | 2.2 Search vendor "Mozilla" for product "Firefox Os" and version "2.2" | - |
Affected
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